Health, Safety & Growing Up (Grades 1-5)

Put a real plate on the table

Go and get a dinner plate. A big one, the kind you eat your evening meal from. Put it on the table in front of you.

Now imagine a line straight down the middle, cutting the plate into two halves. Then cut the right half in two again, so you have one big half on the left and two smaller quarters on the right.

That is the whole idea of this lesson. Three spaces on one plate. What goes in them is the rest.

Key idea: A healthy meal is not about one magic food. It is about how much of each kind of food is on the plate.

The five groups

Food scientists sort food into five food groups. A food group is just a family of foods that do a similar job inside you.

Two words in that table are new. Fibre is the tough part of a plant that your body cannot break down, so it sweeps through your insides and keeps everything moving. The stringy bits in celery are fibre. Calcium is a mineral your body uses to build bone, the way a builder uses bricks. Milk is full of it.

The point: Five groups, and every one of them does a job the others cannot do.

Drawing the lines

Back to your plate. Here is where the groups go.

• The big half on the left: fruit and vegetables together. Usually more vegetables than fruit.
• The top quarter on the right: grains. Make at least half of your grains the brown kind, like wholemeal bread or brown rice.
• The bottom quarter on the right: a protein food.
• Beside the plate: a glass of milk, or a pot of yoghurt, or a piece of cheese.

This picture has a name. The United States Department of Agriculture calls it MyPlate, and it is printed on school posters all over the country.

Look at the halves again. Half the plate is plants you can see the colour of. That single rule does most of the work.

Remember: Half fruit and vegetables, a quarter grains, a quarter protein food, dairy on the side.

Build plate number one

Let us build a real dinner. Say the kitchen has chicken, rice, frozen peas, a carrot, an apple and some milk.

1. Left half: peas and carrot sticks, and the apple cut into slices. Vegetables and fruit, and the half is full.
2. Top right quarter: a scoop of rice.
3. Bottom right quarter: a piece of chicken about the size of your own palm.
4. Beside it: a glass of milk.

Check it. Five groups, all present. Half the plate coloured. That plate is done.

Notice what you did not have to do. You did not weigh anything. You did not read a label. You looked at the plate and compared sizes.

Now change one thing

Same kitchen, but tonight the rice becomes chips, and the peas and carrot go back in the freezer.

Now the plate is chips on the left, chips in the middle, chicken on the right, and an apple somewhere behind the ketchup. Count the groups: grains, protein, fruit. Three out of five, and the big half is gone.

Here is the fix, and it is small. Put the chips in one quarter instead of half the plate. Tip the peas back out of the freezer into the big half. Keep the apple. Now you are back to five groups and the plate looks almost the same amount of food.

That is the useful discovery: the problem was almost never the chips. The problem was that the chips took the space the vegetables needed.

Why this matters: You fix a plate by moving things around, not by banning a food.

A note for the grown-up helping

Use the child's own plate rather than a printed picture, and let proportions stay rough. A serving spoon and an eye are accurate enough at this age. National food guidance in the United States was updated in 2025 with a new edition of the Dietary Guidelines for Americans, but the five food groups and the half-a-plate-of-plants rule are common to every recent version and to the advice pediatricians give. Two more things worth saying once: this course is general health education and is not medical advice, so any question about your particular child, including allergies, special diets and growth, belongs with your pediatrician; and children should not be put on calorie-limited diets except on a doctor's instruction.

Common misconceptions

• Mistake: some foods are bad foods. A chip is not a bad food. A plate made only of chips is a badly built plate. Foods high in fat, salt and added sugar belong in small amounts and not in the big half.
• Mistake: fruit juice counts as a fruit and a drink. Whole fruit has fibre in it and juice mostly does not, because the fibre gets thrown away when the fruit is squeezed. Eat the orange, drink the water.
• Mistake: protein only means meat. Beans, lentils, eggs, fish, nuts, tofu and chickpeas are all protein foods. A plate with no meat on it can still have a full protein quarter.
• Mistake: if a plate looks colourful it must be balanced. Sweets are colourful. Check the groups, not the colours alone.

What you now know

• The five food groups are vegetables, fruit, grains, protein foods and dairy.
• Half the plate is fruit and vegetables, one quarter is grains, one quarter is a protein food, and dairy sits beside it.
• Fibre is the part of a plant your body cannot break down, and calcium is the mineral that builds bone.
• Making at least half your grains wholegrain is the easy upgrade inside the grain quarter.
• A plate is fixed by changing how much space each food gets, not by calling a food bad.

Sources

1. U.S. Department of Agriculture. (2026). MyPlate: The five food groups. Center for Nutrition Policy and Promotion. myplate.gov
2. U.S. Department of Agriculture & U.S. Department of Health and Human Services. (2025). Dietary Guidelines for Americans, 2025-2030. dietaryguidelines.gov
3. American Academy of Pediatrics. (2026). Nutrition. HealthyChildren.org. healthychildren.org
4. Wikipedia contributors. (2026). MyPlate. Wikipedia. wikipedia.org

Pour out the sugar

Here is a puzzle you can solve with a teaspoon and a bowl. A can of ordinary cola holds twelve fluid ounces, which is about 355 millilitres. Nobody spoons sugar into it at the table. So how much sugar is actually in there?

Count it out. Put ten level teaspoons of sugar into a bowl, one at a time, and look at the pile.

That pile is what is dissolved in one can. The United States Centers for Disease Control and Prevention puts it at more than ten teaspoons, about 42 grams, in a twelve-ounce regular soda.

You cannot see it because sugar disappears into water. It does not disappear inside you.

The upshot: A fizzy drink is sugar water with flavour and bubbles added.

Why it is hidden

Stir a teaspoon of sugar into a glass of water. Keep stirring. The white crystals vanish and the water goes clear again.

That is dissolving. The sugar breaks into pieces far too small to see, spreads all through the water, and stays there. Nothing has been removed. If you left the glass on a sunny windowsill for a week and the water evaporated away, your teaspoon of sugar would be sitting in the bottom of the glass again.

Fizzy drinks are clear or dark, but either way you cannot see the sugar. Colour tells you nothing.

Remember: Dissolved is not gone.

What happens next

Two things happen when the sugar arrives.

The first happens in your mouth, and it happens fast. Bacteria living on your teeth eat the sugar and make acid. The acid attacks the hard outside of a tooth, called enamel. That is how a hole starts. You will meet this properly in the teeth lesson, but it starts with a drink more often than with a sweet, because a drink washes over every tooth.

The second is about what the drink is not carrying. A can of cola has no vitamins, no fibre, no calcium and no protein. Doctors call this kind of thing empty calories: energy with nothing useful travelling alongside it. The American Academy of Pediatrics warns that sugary drinks add empty calories and are linked to extra weight gain and to cavities.

Now compare. An apple also contains sugar. It arrives packed in fibre, water, and vitamins, and you have to chew it. That is a completely different delivery.

There is one more thing worth knowing, and it surprises people. For your teeth, how often you sip matters as much as how much you drink. Every mouthful starts a fresh burst of acid. One glass with dinner is a single burst that your spit can wash away. The same drink carried round all afternoon and sipped every ten minutes keeps the acid going for hours.

So what?: If you are going to have a sugary drink, have it in one go with a meal, not in slow sips across the day.

Read the drinks table

The CDC counted the sugar in twelve ounces of several drinks. Here are their numbers.

Read the top two rows again. Orange soda beats cola. If you had guessed that the fruit-flavoured one was the gentler choice, the table says no.

Look at the sports drink row too. Five teaspoons is less than a cola, and it is still five teaspoons more than a glass of water.

What matters here: Sports drinks were invented for adults sweating hard for over an hour. A football practice in the park is a water job.

So what should you drink

Plain water and milk. That is the whole list for everyday drinking, and the AAP says so plainly.

How much water? Roughly:

These are rough numbers, not rules to obey with a measuring jug. You need more on a hot day, and more when you have been running. Milk counts towards the total.

Juice is the in-between case. It does have vitamins, and it also has most of the sugar of the fruit with almost none of the fibre. The AAP sets a daily ceiling: up to 4 to 6 ounces for ages 4 to 6, and up to 8 ounces for ages 7 to 18. Whole fruit has no ceiling.

Key idea: Water first, milk with meals, juice small and occasional, fizzy drinks as a treat rather than a habit.

A note for the grown-up helping

The teaspoon demonstration lands harder than any number, so do it with the real can in front of you. Keep the tone factual rather than frightening, and avoid labelling the child's past drinks as a mistake. The most effective change at this age is availability: a jug of cold water on the table at meals, a refillable bottle in the school bag, and fizzy drinks kept for specific occasions rather than banned outright, which tends to make them more interesting.

Common misconceptions

• Mistake: clear drinks have no sugar. Lemonade is clear and a fruit juice drink can be pale. Sugar has no colour once it dissolves.
• Mistake: sports drinks are healthy because athletes drink them. They carry about five teaspoons of sugar per twelve ounces. They exist for long, sweaty endurance exercise, not for a normal afternoon.
• Mistake: juice is the same as fruit. The fibre is left behind when fruit is squeezed, and it is easy to drink the sugar of four oranges in one glass and slow to eat four oranges.
• Mistake: you only need water when you feel thirsty. Thirst is a good signal, but it arrives late on a hot day or during hard play. Drinking before you are desperate is the easier habit.

The short version

• A twelve-ounce can of regular soda carries more than ten teaspoons of sugar, about 42 grams.
• Dissolved sugar is invisible and completely still there.
• Sugary drinks feed the bacteria that make acid on your teeth, and they bring energy with nothing useful attached.
• Orange soda has more sugar than cola. Sports drinks have less, and still much more than water.
• Plain water and milk are the everyday drinks. About 5 cups of fluid a day at ages 4 to 8, and 7 to 8 cups from about 9.
• Juice has a daily ceiling. Whole fruit does not.

Sources

1. Centers for Disease Control and Prevention. (2026, March 5). Rethink your drink. Healthy Weight and Growth. cdc.gov
2. American Academy of Pediatrics. (2024, July 26). Choose water for healthy hydration. HealthyChildren.org. healthychildren.org
3. National Institute of Dental and Craniofacial Research. (2025). Tooth decay. National Institutes of Health. nidcr.nih.gov
4. Wikipedia contributors. (2026). Sugary drink. Wikipedia. wikipedia.org

Nadia and the broccoli

Nadia is seven. Broccoli appears on her plate on a Tuesday. She looks at it, says she does not like broccoli, and pushes it to the edge.

Her dad asks a fair question. Have you tried it?

She has not. Not this time, and not last time either. What she means is that broccoli looks like a small green tree and she is suspicious of it.

This is so common it has a name. Neophobia means being wary of anything new, and food neophobia is at its strongest in young children. It is not naughtiness. A young human who ate every unknown berry in the wood did not last long, so being careful about new food was useful for a very long time.

The point: Refusing a new food is a normal reflex, not a decision you are stuck with.

What happened on the tenth Tuesday

In 1982 two researchers, Leann Birch and Diane Marlin, gave small children foods they had never met before, over and over across several weeks. Some foods were offered twice. Some were offered ten or fifteen or twenty times.

The foods that got offered twice stayed unpopular. The foods that got offered ten or more times climbed up the children's list.

Nothing changed about the cheese or the fruit. What changed was how familiar it was. That is the whole trick.

So when Nadia meets broccoli for the eighth or ninth time, something quietly different happens. It is no longer a strange green tree. It is that thing that turns up sometimes. Her mouth is ready for it, and now she can actually taste it instead of just worrying about it.

Worth holding on to: Liking a food is mostly a matter of meeting it enough times.

A rule for tasting that is fair to everybody

Here is a way through that works without anyone getting cross.

• You take one taste. A real one, on your tongue, not a lick.
• If you do not want more, you say so politely and you are finished with it.
• Nobody makes you eat the rest. Nobody promises you pudding for eating it.
• It comes back another day. Not as a punishment. Just because that is what happens with food.

The polite sentence matters. Practise it now: Not for me today, thank you. That is honest, it is short, and it does not announce to everybody at the table that the food is disgusting, which makes it harder for the next person to try it.

Compare that with shouting that something is gross. Both sentences mean you are not eating it. Only one of them leaves the door open for next Tuesday.

Why this matters: A taste is not a promise. You can try something and still say no.

And if you still hate it after ten tries

Then you have found something out. Some people really do not like olives, or blue cheese, or mushrooms, and ten honest tastes is enough evidence to say so.

Part of this is built in. People differ in how strongly they taste bitterness, which is why the same sprout can be almost sweet to one person at the table and horrible to another. Neither of you is pretending.

What you cannot do is use one dislike to cancel a whole food group. If you truly do not get on with broccoli, the job is to find the vegetables you do like, not to leave the big half of the plate empty. There are hundreds of them. You have met about nine.

Bottom line: A real dislike is allowed. Skipping every vegetable because of it is not.

Clean hands before anything else

Now for the part where you make your own snack. It starts at the sink, every single time.

Wet your hands, soap them, scrub for twenty seconds including the backs and between the fingers, rinse, and dry on a clean towel. You will do this properly in Lesson 6. For now, do not skip it, because your hands have been on door handles, the floor, a dog and your own face since the last wash.

Then wipe the counter, and get a clean bowl and spoon.

The three-group bowl

Here is a snack you can build with no knife, no hob and no adult hands. It hits three of the five food groups on purpose.

No cutting. No heat. Nothing sharp. If you want it sweeter, add more fruit rather than sugar, because the fruit brings fibre and vitamins with its sweetness.

Then the last step that everybody forgets: put the yoghurt back in the fridge, put the oats away, and wash your bowl. Food left out gets warm, and warm food grows bacteria.

In short: Clean hands, three groups, no knife, and put it all away afterwards.

A note for the grown-up helping

The exposure research was done with two-year-olds and novel cheeses and fruits, so treat the number of tries as an order of magnitude rather than a target. What transfers reliably is the shape of it: repeated, low-pressure offers work, and pressure does not. Serving the new food alongside something familiar, eating it yourself without comment, and letting the child leave it all raise the odds. Rewarding a bite with dessert tends to teach the child that the vegetable is the price of the pudding. If your child's eating is so restricted that growth, weight or nutrition worries you, that is a conversation for your pediatrician rather than a course.

Common misconceptions

• Mistake: if you did not like it once, you do not like it. One taste tells you almost nothing. The research says the tenth taste is a different experience from the first.
• Mistake: hiding vegetables inside other food teaches you to like them. Blended carrot in a sauce is fine as food, but you cannot get used to a taste you never knowingly met.
• Mistake: a snack has to come out of a packet. The bowl above took four steps and no cooking at all.

What to carry forward

• Being wary of new food is called neophobia and it is normal in children.
• Birch and Marlin found that foods offered ten or more times became liked, while foods offered twice did not.
• The fair deal is one real taste, a polite refusal if you want one, and the food comes back another day.
• Not for me today, thank you is the sentence to practise.
• Every snack starts with a twenty-second handwash and ends with putting the food away.
• Yoghurt, banana, berries and oats is a three-group snack you can make alone.

Sources

1. Birch, L. L., & Marlin, D. W. (1982). I don't like it; I never tried it: Effects of exposure on two-year-old children's food preferences. Appetite, 3(4), 353-360.
2. American Academy of Pediatrics. (2018, September 10). Tips for feeding picky eaters. HealthyChildren.org. healthychildren.org
3. U.S. Department of Health and Human Services. (2025). 4 steps to food safety. FoodSafety.gov. foodsafety.gov
4. Wikipedia contributors. (2026). Food neophobia. Wikipedia. wikipedia.org

Start at the wrong end

Most people decide bedtime first and then find out in the morning whether it worked. Do it the other way round. Start with the alarm clock.

Say your alarm goes off at seven o'clock, because school starts at half past eight and you need time to eat and find your shoes. Seven is fixed. It is not up for discussion, and it does not care how your evening went.

So bedtime is not a choice either. It is a subtraction.

Key idea: Bedtime is the answer to a sum, and the alarm clock is the number you start from.

How many hours go in the sum

The American Academy of Sleep Medicine, a group of doctors who study sleep, published a set of numbers in 2016. The American Academy of Pediatrics agrees with them. These are hours in a whole day, so a nap counts towards the total.

Find your row. If you are eight, you need somewhere between nine and twelve hours. Most children that age land near ten.

Notice that the numbers go down as you get older, not up. Sleep is not something you grow out of gradually until you are a teenager who needs four hours. A fifteen-year-old still needs eight to ten.

Do the subtraction

Here is the worked example. Priya is eight. Her alarm is at seven o'clock. She wants ten hours.

1. Start at 7:00 in the morning.
2. Count back ten hours. Seven take away ten crosses midnight, so go in steps: back seven hours reaches midnight, and three more reaches nine o'clock at night.
3. So Priya needs to be asleep by 9:00 pm.
4. Falling asleep takes time. Add fifteen to twenty minutes of lying there. So lights out at 8:40.
5. Teeth, pyjamas, story: about twenty minutes. So bedtime starts at 8:20.

That last step is the one everybody skips. Bedtime is not the moment you get into bed. It is the moment you start heading there.

The point: Asleep by nine means starting at twenty past eight.

Change one number and watch it move

Now change one thing. Priya joins a football club that finishes at 7:30 pm, twenty minutes from home.

She gets in at 7:50, hot and hungry. She still needs dinner. The 8:20 start is now nearly impossible, and the whole plan slides.

Work the sum again and you can see the choices clearly. Either dinner is ready the moment she walks in and the routine shortens to fifteen minutes, or she has football on a night when the alarm is later, or she accepts about nine hours instead of ten on Thursdays and gets the extra back at the weekend. What she cannot do is keep every number and hope.

This is why the sum is useful. It turns a vague feeling that there is not enough evening into a specific twenty minutes that has to come from somewhere.

What matters here: When the numbers do not fit, something has to change on purpose.

Screens are a special case

The AAP is direct about this one. Keep all screens, meaning televisions, tablets, laptops and phones, out of children's bedrooms, especially at night. And turn all screens off at least sixty minutes before bedtime.

There are two separate reasons. A screen is bright, and bright light in the evening tells your brain that it is still daytime. And a screen is interesting, which is worse: a video that ends on a cliffhanger keeps your mind running long after you have put it down.

So for Priya, screens go off at 7:20 and the tablet charges in the kitchen. Not in her room, because a device beside the bed is a device you will check.

Remember: Screens off an hour before bed, and charging somewhere that is not your bedroom.

The same four steps, every night

The AAP has a short name for the school-age routine: brush, book, bed. Same order, same time, every night, including weekends.

The word for this is a routine: the same steps in the same order, so your body starts getting sleepy before you have even decided to.

What too little sleep actually does

It is not just being tired. The AAP lists what regular sleep loss brings: being irritable, struggling to concentrate, headaches, and a harder time with mood. Children who get enough sleep have a healthier immune system and do better at school.

That word immune system means the part of you that fights germs. Short sleep makes that job harder, which is one reason the badly-slept week is often the week you catch something.

A note for the grown-up helping

The strongest single lever at this age is a consistent wake time, weekends included, because it anchors the whole cycle. Weekend lie-ins of more than about an hour tend to push Sunday night back out again. The sixty-minute screen curfew works far better when the charging point is genuinely outside the bedroom, and it is much easier to hold if the adults use the same rule. If your child snores loudly, breathes heavily or stops breathing in their sleep, that is worth raising with your pediatrician rather than treating as a routine problem.

Common misconceptions

• Mistake: you can catch up at the weekend. A long Saturday lie-in helps a little, and it also makes Sunday night harder, because your body has just learned a later schedule.
• Mistake: big children need less sleep. The numbers do drop with age, but slowly. A twelve-year-old is still in the nine to twelve band.
• Mistake: a screen in bed helps you wind down. It is bright and it is interesting, and both of those work against sleep.

Putting it together

• Children aged 6 to 12 need 9 to 12 hours of sleep in a day, and 3 to 5 year olds need 10 to 13 including naps.
• Find bedtime by counting backwards from the alarm, then add time for falling asleep and for the routine.
• Bedtime is when the routine starts, not when your head hits the pillow.
• Screens off at least sixty minutes before bed, and out of the bedroom overnight.
• Brush, book, bed, in the same order at the same time, teaches your body when sleep is coming.
• Too little sleep shows up as irritability, poor concentration and more colds.

Sources

1. American Academy of Pediatrics. (2026, August 7). Healthy sleep habits: How many hours does your child need? HealthyChildren.org. healthychildren.org
2. Paruthi, S., Brooks, L. J., D'Ambrosio, C., Hall, W. A., Kotagal, S., Lloyd, R. M., Malow, B. A., Maski, K., Nichols, C., Quan, S. F., Rosen, C. L., Troester, M. M., & Wise, M. S. (2016). Recommended amount of sleep for pediatric populations: A consensus statement of the American Academy of Sleep Medicine. Journal of Clinical Sleep Medicine, 12(6), 785-786.
3. American Academy of Pediatrics. (2022, August 25). Bedtime trouble. HealthyChildren.org. healthychildren.org
4. Wikipedia contributors. (2026). Sleep. Wikipedia. wikipedia.org

Two afternoons, side by side

Two children get home from school at four o'clock on the same Wednesday.

Kofi drops his bag, goes to the park with his brother and plays tag until half past five. Then he walks home. He has not done any exercise, as far as he is concerned. He has been playing.

Lena puts on trainers, does ten minutes of stretching in her room, and sits down again.

Kofi has done about eighty minutes of what the guidelines are asking for. Lena has done ten minutes of something useful that does not count towards the same total. Neither of them knows it.

The core of it: Playing hard counts. That is not a loophole, it is the actual recommendation.

The number, and where it comes from

The United States government publishes the Physical Activity Guidelines for Americans. The second edition, from 2018, is still the current one, and the CDC states the children's part like this: young people aged 6 to 17 need 60 minutes or more of moderate-to-vigorous physical activity each day.

Two new words there. Moderate means your heart beats faster and you breathe harder, but you could still talk. Vigorous means you are working hard enough that talking comes out in short bursts.

There is a quick test you can do without any equipment. Say a whole sentence out loud while you are moving. Comfortable sentence means light. Sentence with a gap for breath means moderate. Three words at a time means vigorous.

Remember: Sixty minutes a day, and you can test the level by trying to talk.

Three kinds of moving, not one

The guidelines do not just ask for an hour of anything. They ask for three different jobs to get done in the week.

Now read the table properly, because the interesting part is in the overlaps.

Look at skipping. It is in the aerobic row and the bone row. Look at running: aerobic and bone. Climbing a frame is muscle-strengthening, and if you are chasing someone round it, it is aerobic too.

That is why an hour at a playground does more work than an hour of any one tidy exercise. You climb, you hang, you jump off, you run away. Three jobs, one afternoon, no equipment.

Compare that with an hour of one thing. An hour of swimming is excellent aerobic work and builds muscle, but swimming is not weight-bearing, so it does much less for bones. Nothing is wrong with it. It is just not the whole set.

Why this matters: Variety is not a nice extra. Each kind of movement builds a different part of you.

Where stretching fits

Lena's ten minutes of stretching were not wasted. Stretching keeps you flexible, which means your joints can move through their full range without pulling.

But flexibility is a fourth thing, and it is not counted inside the sixty minutes. Stretch after moving, when your muscles are warm, and hold each stretch still for about twenty seconds rather than bouncing.

The useful order is: move first, stretch after.

Adding up a real Wednesday

Here is Kofi's day, counted honestly.

He is well over the hour and none of it was called exercise. Now count the honest zero: the break where he stood and talked. Standing still is not moving. This is where most of the missing minutes hide on a bad day.

In short: Count the day you actually had, not the day you meant to have.

The family walk

One more thing that works better than it sounds. A twenty-minute walk after dinner with somebody else in the family does three things at once: it adds moderate minutes, it gets you outside in daylight, and it is the easiest time to talk to an adult about anything, because you are side by side instead of face to face.

Make it the same evening each week and it stops needing to be arranged.

A note for the grown-up helping

Expect the number to look alarming before you count, and unremarkable afterwards. Active travel and playtime usually do most of the work, so the highest-value change is normally protecting unstructured outdoor play rather than adding a class. The guidance is from the Physical Activity Guidelines for Americans, second edition, 2018, as summarised by the CDC in December 2025. If your child has asthma, a heart condition, a joint problem or a disability that affects movement, ask your pediatrician how to adapt it; the guidelines have specific advice for children with disabilities rather than an exemption.

Common misconceptions

• Mistake: only sport counts. Walking to school, chasing a dog, dancing in the kitchen and climbing a frame all count. The guideline asks for movement, not membership of a team.
• Mistake: the hour has to be in one go. It does not. Fifteen minutes plus twenty plus twenty-five is a full hour, and that is how most children reach it.
• Mistake: stretching is exercise. It is worth doing, and it belongs in the flexibility box, not inside the sixty minutes.
• Mistake: if you are thin you do not need to move. The reasons for moving are a stronger heart, stronger muscles, denser bones, better sleep and better mood. None of those are about what you weigh.

The takeaway

• Children aged 6 to 17 need 60 minutes or more of moderate-to-vigorous activity every day.
• Moderate means you can still talk; vigorous means you can manage about three words at a time.
• Most of the hour should be aerobic, with vigorous activity on at least three days a week.
• Muscle-strengthening on at least three days, and bone-strengthening on at least three days.
• Playground play covers all three at once, which is why it beats an hour of any single activity.
• Stretching keeps you flexible and sits outside the sixty minutes. Move first, stretch after.
• The hour can be broken into pieces across the day.

Sources

1. Centers for Disease Control and Prevention. (2025, December 4). Child activity: An overview. Physical Activity Basics. cdc.gov
2. U.S. Department of Health and Human Services. (2018). Physical Activity Guidelines for Americans (2nd ed.). Office of Disease Prevention and Health Promotion. odphp.health.gov
3. American Academy of Pediatrics. (2026). Fitness. HealthyChildren.org. healthychildren.org
4. Wikipedia contributors. (2026). Physical exercise. Wikipedia. wikipedia.org

Follow one germ through a Monday

At ten past eight on Monday morning, a boy called Theo sneezes into his hand on the school bus. He does not think about it again.

At quarter past, he holds the rail on the way off the bus. Some of what was on his hand is now on the rail.

At twenty past, a girl called Mei holds the same rail. Now it is on her hand.

At half past nine, in the middle of a maths lesson, Mei rubs her eye.

That is the whole story. Bus, rail, hand, eye. By Thursday Mei has a cold, and nobody in the family can work out where it came from.

Key idea: Germs almost never fly straight from one person to another. They travel on things you touch.

What a germ actually is

A germ is a living thing far too small to see, and some kinds can make you ill. There are two main sorts you will hear about.

• Bacteria are tiny single living things. Most kinds are harmless and some are useful, including the ones in your gut that help you digest food. A few cause illnesses like strep throat.
• Viruses are even smaller and are not quite alive on their own. They have to get inside one of your cells to make copies. Colds, flu and chickenpox are viruses.

How small is too small to see? Put a full stop on this page. You could fit roughly a million bacteria across it. You are not going to spot them on your fingers, and that is exactly why hands feel clean when they are not.

Now the important part. A germ on your skin usually cannot get in. Skin is a good wall. Germs get in through the wet doorways: your eyes, your nose and your mouth. Mei did not get ill from holding the rail. She got ill from touching her eye afterwards.

Why this matters: Your hands are the taxi. Your eyes, nose and mouth are the door.

Twenty seconds, and why a rinse fails

Soap is not a poison. It does not kill germs on contact. Soap works mechanically: one end of a soap molecule grabs grease and the other end holds on to water, so when you rub, the dirt and the germs are lifted off your skin and then washed down the drain.

The lifting takes rubbing, and the rubbing takes time. That is where the number comes from. The CDC says to scrub for at least twenty seconds.

Here are the five steps, in order.

Twenty seconds is much longer than it sounds. The CDC gives a timer that needs no clock: hum Happy Birthday all the way through, twice.

Notice step 2. The backs of the hands, between the fingers and under the nails are the three places almost everybody misses, because a quick wash only ever soaps the palms.

The point: Soap lifts germs off; rubbing does the lifting; twenty seconds is how long the lifting takes.

When to wash

The American Academy of Pediatrics lists the moments: before eating, after using the toilet, after playing outside, after touching an animal, after coughing or sneezing, and whenever somebody at home is ill.

Soap and water is the first choice. Hand sanitiser is the backup for when there is no sink, like in a car, and it works less well on hands that are visibly dirty, because it cannot lift mud off.

Coughs, sneezes and elbows

Theo's mistake was sneezing into his hand, and then using that hand on everything.

The CDC gives the fix in four steps. Cover your mouth and nose with a tissue. Throw the used tissue in the bin. If you have no tissue, cough or sneeze into your elbow, not your hands. Then wash your hands with soap and water for at least twenty seconds.

The elbow is not a magic body part. It is simply the part of you that touches almost nothing else. You do not open doors with your elbow, or hold a rail with it, or eat a sandwich with it.

Worth holding on to: Tissue first, elbow second, hand never.

The day you stay home

Being ill is not a failure and staying home is not a punishment. It is the one move that stops the chain.

The CDC's rule for respiratory illnesses is short. Stay home and away from other people while you have symptoms. You can go back to normal activities when both of these have been true for at least 24 hours: your symptoms are getting better overall, and you have had no fever without taking fever medicine.

Read that second half carefully. Medicine that brings a temperature down does not make you less infectious. It hides the number. The 24 hours has to be fever-free without the medicine doing the work.

A note for the grown-up helping

Children copy handwashing far more reliably than they follow instructions about it, so wash beside them at the same sink rather than supervising from the door. A song is the practical timer at this age, and the three missed areas are worth checking by sight. The return-to-activities guidance quoted here is the CDC's respiratory-virus advice, reviewed in August 2025, and it is general: your school or childcare setting may have its own exclusion rules, and conditions like chickenpox, vomiting illnesses and strep have separate ones. Check with your pediatrician or the school when you are unsure.

Common misconceptions

• Mistake: a quick rinse under the tap cleans your hands. Water alone leaves most of what is there. Soap plus twenty seconds of rubbing is what lifts germs off, and the rinse only carries away what the rubbing has loosened.
• Mistake: hands that look clean are clean. A million bacteria would fit across a full stop. Looking is not a test.
• Mistake: hot water is needed to kill germs. The CDC says warm or cold both work. Water hot enough to kill bacteria would burn you.
• Mistake: sanitiser is better than soap. It is the backup for when there is no sink, and it works less well on visibly dirty hands.

Recap

• Germs are living things too small to see. Bacteria are tiny single organisms; viruses are smaller and need your cells to copy themselves.
• Germs travel on hands and on the things hands touch, and they get in through your eyes, nose and mouth.
• Soap lifts germs off your skin, and the lifting needs at least twenty seconds of rubbing.
• The five steps are wet, lather, scrub, rinse, dry, and the three missed spots are backs, between fingers, and under nails.
• Cough into a tissue, bin it, and use your elbow if you have no tissue.
• Stay home while you have symptoms, and go back once you have been improving and fever-free for 24 hours without fever medicine.

Sources

1. Centers for Disease Control and Prevention. (2024, February 16). About handwashing. Clean Hands. cdc.gov
2. Centers for Disease Control and Prevention. (2024, April 16). Healthy habits: Coughing and sneezing. Hygiene. cdc.gov
3. Centers for Disease Control and Prevention. (2025, August 18). Preventing spread of respiratory viruses when you're sick. cdc.gov
4. American Academy of Pediatrics. (2022, February 7). Hand washing: A powerful antidote to illness. HealthyChildren.org. healthychildren.org
5. Wikipedia contributors. (2026). Hand washing. Wikipedia. wikipedia.org

Look at the brush before you use it

Pick up your toothbrush and turn it over. The bristles should be soft, and they should still be straight. If they are splayed out sideways like a used paintbrush, the brush is finished. The American Dental Association says to replace it every three or four months, or sooner if the bristles are frayed.

Now squeeze out the toothpaste. If you are three or older, the amount is the size of a pea. Not a stripe along the whole brush, whatever the advert shows. A pea.

Check the tube for the word fluoride. Fluoride is a mineral that makes enamel harder to dissolve, and it is the reason toothpaste does anything at all.

Key idea: Soft bristles, a pea of fluoride toothpaste, and a brush that has not gone splayed.

The two minutes, worked through

The ADA's recommendation is two minutes, twice a day. Here is how to spend them so that nothing gets missed.

Every tooth has three surfaces you can reach: the outside, facing your cheek; the inside, facing your tongue; and the top, where you chew. Your mouth has four quarters: top left, top right, bottom left, bottom right.

1. Hold the brush at about 45 degrees to the gum line, so the bristles reach where the tooth meets the gum.
2. Use short strokes, about one tooth wide. Do not scrub hard. Hard scrubbing wears the gums back, and it does not clean better.
3. Spend thirty seconds on each quarter of your mouth. Four quarters, thirty seconds each, is your two minutes.
4. In each quarter do outsides, then insides, then chewing tops.
5. Finish by brushing your tongue, where a lot of the bacteria live.
6. Spit out the toothpaste. Do not rinse with water, because rinsing washes the fluoride straight off the teeth you just put it on.

Two minutes is a long time with a toothbrush in your mouth. Use a timer, a sand timer, or a two-minute song, because nearly everybody who guesses stops at about forty-five seconds.

Remember: Thirty seconds per quarter, outsides then insides then tops, and spit rather than rinse.

The gap the brush cannot reach

Hold two fingers tightly together and try to wash between them with a cloth. You cannot. The same is true of two teeth that touch.

That is why the ADA also says to clean between your teeth once a day, with floss or with the small brushes or picks made for the job. It sounds fussy until you learn where cavities most often start, which is exactly in that gap.

Children usually need help with flossing until about the age of ten, when they can manage the movement themselves.

How a hole actually happens

Now the chemistry, in five steps. The National Institute of Dental and Craniofacial Research explains it like this.

1. Bacteria live on your teeth in a sticky film called plaque.
2. You eat or drink something with sugar or starch in it.
3. The bacteria eat the sugar and make acid.
4. The acid pulls minerals out of the enamel, the hard white outside of the tooth.
5. If that keeps happening, the enamel gives way and a hole forms. The hole is called a cavity.

Here is the part worth knowing. Step 4 can go backwards. Early on, before a hole exists, fluoride can put minerals back and stop or even reverse the damage. Once step 5 has happened and there is a real hole, it does not heal. A dentist has to fill it.

And now you can see why the drinks lesson mattered. It is not the total sugar so much as how often the acid gets started.

The upshot: Early damage can be reversed. A hole cannot.

The same routine on a worse day

Take the routine above and change one thing: you skip the night brush because you are tired.

That skip matters more than a skipped morning one. While you sleep you make much less spit, and spit is what normally washes acid away and carries minerals back. So the plaque from dinner sits on your teeth, undiluted, for eight or nine hours.

If you are ever going to brush only once, brush at night. The AAP suggests right after breakfast and again before bed.

The chair, and why it tips back

A check-up is not a punishment and it usually does not hurt. The dentist counts your teeth, looks for early soft spots with a small mirror, sometimes takes a picture to see between the teeth, cleans off hardened plaque, and often paints on fluoride varnish.

The AAP says a child should first see a dentist by their first birthday or within six months of their first tooth. After that the dentist decides how often you should come back.

Losing them on purpose

You were born with all twenty baby teeth already waiting inside your jaw. They came through from around six months old, and by about three you had all twenty: ten on top, ten underneath.

From around age six they start falling out, usually the bottom front two first, because the adult teeth underneath are pushing up. That wobble is not damage. It is a schedule.

The ADA calls baby teeth nature's braces, because they hold the right spaces open for the adult teeth. That is why a baby tooth with a cavity still gets treated: losing it too early lets the gap close and the adult tooth comes through crooked.

A note for the grown-up helping

The AAP suggests assisting or supervising brushing until a child has mastered it, which is usually around age ten, and a quick look afterwards along the gum line catches most of what gets missed. Under three, the amount is a smear the size of a grain of rice rather than a pea. Flossing generally needs an adult until about ten. Any new brown or white spot on a tooth, any tooth that hurts with cold, and any wobbling tooth that hurts rather than wobbles is a reason to ring the dentist rather than wait.

Common misconceptions

• Mistake: you only need to brush the teeth you can see. The insides and the chewing tops hold plaque just as well as the fronts, and back teeth have grooves that trap food. The mirror shows you the part that matters least.
• Mistake: baby teeth do not matter because they fall out. They hold the spaces for adult teeth, and a baby tooth lost too early can leave an adult tooth no room.
• Mistake: brushing harder cleans better. Hard scrubbing wears your gums back and can damage enamel. Short, gentle strokes at the gum line do the work.
• Mistake: rinsing with water afterwards makes your mouth cleaner. It washes off the fluoride you just applied. Spit, and leave it.

Pulling it together

• Two minutes, twice a day, with a soft brush and a pea of fluoride toothpaste.
• Thirty seconds per quarter of your mouth: outsides, insides, then chewing tops, and the tongue at the end.
• Clean between your teeth once a day, because a brush cannot get into the gap where cavities start.
• Plaque bacteria eat sugar, make acid, and the acid pulls minerals out of enamel until a hole forms.
• Fluoride can reverse early damage. A real cavity has to be filled.
• Replace the brush every three or four months, or when the bristles splay.
• Twenty baby teeth start falling out around age six, and they hold the spaces for the adult teeth.

Sources

1. American Dental Association. (2026, August). Toothbrushes. ADA Oral Health Topics. ada.org
2. National Institute of Dental and Craniofacial Research. (2025, September). Tooth decay. National Institutes of Health. nidcr.nih.gov
3. American Academy of Pediatrics. (2026, April 17). Brushing up on oral health: Never too early to start. HealthyChildren.org. healthychildren.org
4. American Dental Association. (2026). Baby teeth. MouthHealthy. mouthhealthy.org

Start with the wrong answer

Under the kitchen sink there is a bottle of bright blue liquid. A seven-year-old looks at it and thinks: blue, sweet-smelling, in a plastic bottle, like a sports drink. Probably a drink.

Trace that thought. It is not stupid. Every single clue the child used is real: the colour is real, the smell is real, the bottle shape is real. The reasoning is sound.

The reasoning is also useless, and here is exactly where it breaks. Colour, smell and bottle shape are chosen by the person who makes the product, and they are chosen to look appealing. They are not evidence about what is inside. The one thing that does tell you is the label, and a young child often cannot read it.

Key idea: You cannot tell what is in a container by looking at it. Ever.

The look-alikes

The problem is bigger than one blue bottle.

• Medicine that tastes of bubblegum or strawberry, because that is how children are persuaded to take it.
• Vitamins shaped like little bears and sold in a jar that looks exactly like a sweet jar.
• Liquid laundry packets, which are squishy, brightly coloured and about the size of a sweet.
• Cleaning sprays that smell of lemon or apple.

A poison is anything that can harm you if it gets inside you. Some things are poison in any amount. Others, like medicine, are helpful in the right dose for the right person and dangerous otherwise. Your sister's medicine is not safe for you.

So the rules are short and they have no exceptions.

1. Only a grown-up gives you medicine, and only your own.
2. Never taste or smell anything to find out what it is.
3. If you do not know what something is, do not open it. Go and ask.
4. Medicine is never a sweet, even when it tastes like one.

If somebody has swallowed something they should not have, an adult calls the Poison Help line, which is free, open all day and night, and staffed by experts: 1-800-222-1222 in the United States. Safe Kids Worldwide asks families to keep it by the phone.

The point: Ask before you open, and never taste to identify.

Three feet from the cooker

Safe Kids Worldwide gives the kitchen rule as a distance. Younger children stay at least three feet away from the cooking space. That is about one big step, or roughly your own arm span.

Why a distance rather than a list of forbidden objects? Because the danger in a kitchen is mostly things moving. A pan being carried, a kettle being poured, a hot tray coming out. You cannot dodge what you are standing next to.

Two more pieces from the same guidance, which are jobs for the adult but worth you knowing so you can spot them: cook on the back rings where possible, and turn pot handles away from the edge so that nothing can be grabbed or caught.

When you are old enough to cook, the rules change shape rather than disappear. Do not leave the kitchen while something is cooking. Use oven gloves, not a tea towel, to carry anything hot. And tie long hair back.

Steam deserves its own sentence. Steam is hotter than the water it came from and it rises straight into a face leaning over the pan. Lift a lid away from yourself, so the steam goes the other way.

Matches are a tool

Matches and lighters are not toys and they are not interesting. They are tools that adults use for a specific job, like a drill or a kettle.

The Red Cross puts it plainly: many home fires are started by children playing with lighters and matches, and children under five are twice as likely as anybody else to die in a home fire. If you find matches or a lighter lying around, the correct move is to leave them where they are and tell an adult. Do not pick them up and carry them to somebody.

Remember: Found matches get reported, not collected.

Two ways out of every room

Now the part to practise before you need it. The Red Cross gives families this plan.

Practise the plan at least twice a year, including once in the dark, and practise waking up to the alarm so you know what it sounds like when you are half asleep.

One more rule that is separate from all of this: if your clothes catch fire, stop, drop and roll. Stop where you are, drop to the ground, cover your face with your hands, and roll over and over. Running feeds the flames with air.

The sentence you should already know

Calling for help works only if you can answer one question: where are you?

So learn your address by heart, out loud, the way you learned a song. House number, street, town. Add the name of a shop or a park on the corner, because that helps too.

When you call the emergency number, a person answers and asks what has happened and where you are. Speak slowly. Say the address. Then do exactly what they tell you, and do not hang up until they say you can.

Worth holding on to: Your address is the most useful thing in your head in an emergency.

A note for the grown-up helping

The parts of this lesson a child cannot do alone are the ones that matter most: medicines and cleaning products up and away, out of reach and out of sight, in their original containers; smoke alarms on every level, inside and outside sleeping areas, tested monthly; and an escape plan practised twice a year. Safe Kids asks that the Poison Help number, 1-800-222-1222, be saved in your phone and posted at home. Practise the emergency call as a role play rather than a real dial, and decide in advance what your child should do if a caregiver is the one who is hurt.

Common misconceptions

• Mistake: you can tell a drink from a cleaner by the smell. Manufacturers add lemon, apple and berry scents on purpose. A smell is a marketing choice, not a safety test.
• Mistake: medicine that tastes nice is basically a sweet. The flavour exists so that ill children will take it. The dose is worked out for one person and one illness.
• Mistake: in a fire you should grab your things or your pet. Get out and stay out. Firefighters have air, protection and training, and you have none of the three.
• Mistake: you should stand up and run from smoke. Smoke rises, so standing puts your face in the worst air in the room. Get low and go.

What to remember

• Colour, smell and bottle shape tell you nothing about what is inside. Only the label does.
• Only a grown-up gives medicine, and only your own. Never taste something to find out what it is.
• The Poison Help number in the United States is 1-800-222-1222.
• Stay at least three feet back from the cooking space, and lift lids away from your face.
• Matches and lighters are adult tools. If you find some, tell an adult and leave them there.
• Two ways out of every room, get low and go, meet outside, get out and stay out, call 9-1-1 from outside.
• If clothes catch fire: stop, drop and roll.
• Know your address by heart.

Sources

1. Safe Kids Worldwide. (2026). Poison safety tips. safekids.org
2. Safe Kids Worldwide. (2026). Burns and scalds safety tips. safekids.org
3. American Red Cross. (2026). Fire safety for kids. redcross.org
4. U.S. Fire Administration. (2026). Home fires. Federal Emergency Management Agency. usfa.fema.gov

Standing at the kerb

You are at the kerb outside school. A white van is parked six steps to your left. The other side of the road is right there, about eight paces away. Your friend has already crossed and is waving at you.

This is the moment the whole lesson is about. Not the road. The ten seconds before you step off the kerb.

Here is the procedure. Do it in this order every single time, until you do not have to think about it.

1. Stop at the kerb. Actually stop, with both feet still.
2. Take the hand of the grown-up you are with.
3. Look left. Look right. Look left again.
4. Listen while you look. Your ears reach round corners that your eyes cannot see past.
5. If a car is there, wait. Wait for it to stop completely, and wait until you can see the driver's face.
6. Walk across. Do not run. Keep looking left and right while you are crossing.

The core of it: Crossing a road is a list you run in the same order every time, not a decision you make fresh.

Why left, right, left again

The order is not random. Where cars drive on the right, the nearest lane to you carries traffic from your left. That is the lane you will step into first, so you check it first. Then the far lane, which comes from your right. Then back to the left, because time has passed since your first look, and a car that was far away then may be close now.

That last look is the one people skip. It is also the one that catches the car that was not there before.

In Britain, Ireland and Australia, where cars drive on the left, the order flips to right, left, right again, for the same reason. The rule is not a magic word. Check the lane you are about to enter, then the far one, then the near one again.

Bottom line: Near lane, far lane, near lane again, because the road changes while you are looking at it.

The van that changes the answer

Now put the white van back, parked right where you wanted to cross.

Run the procedure and watch it fail. You stop. You look left and see the side of a van. Right, clear. Left again, still a van. The road sounds quiet. Everything in the list said go.

Here is the problem in one sentence: a driver coming from your left cannot see you either, because the van is between you. The National Highway Traffic Safety Administration, the United States road safety agency, turns that into a test you can use anywhere. If you cannot see the driver, the driver cannot see you.

So do not cross there. Walk to the corner, where nothing is parked and the view is open both ways, and start the list again at step one. The fix costs twenty steps.

So what?: A blocked view beats a quiet road. If you cannot see, you cannot cross, no matter how empty it sounds.

Walking, not just crossing

Most of a walk is not crossing. NHTSA gives a short list for the rest of it.

• Walk on the pavement whenever there is one. If there is none, walk facing the traffic, so you can see what is coming instead of hoping.
• Cross at a corner or a crossing, never in the middle of a block. Walk, do not run.
• Take headphones out and put the phone away. You need both ears.
• Watch for wheels. A car that makes no sound may still be about to move, and slowly turning wheels are the giveaway.
• At a signal, wait for the walk sign, then check for yourself. A crowd stepping out is not evidence that the cars have stopped.

NHTSA also gives a plain age rule: children under 10 should not cross a street alone, and the helper should be an adult or a brother or sister over 12. That is not an insult. Judging the speed of a moving car takes years of practice, and a nine-year-old is still building it.

The helmet, and the bike under it

A bicycle changes two things: you go faster, and you are harder to see.

So every ride starts with a helmet. Every ride, including the one to the postbox. NHTSA says the fit matters as much as owning one, because a helmet sliding around is not protecting the part of your head that hits the ground. Sizes differ between makers, so try it on, and ask a grown-up to set the straps, which is far easier than doing it in a mirror.

A helmet fits when it sits level rather than tipped back off your forehead, when the straps make a V just under each ear, and when the chin strap is snug enough that the helmet does not slide when you shake your head.

Then the bike itself, in three checks before you go.

On the road, ride with the flow of traffic. This feels backwards to a lot of children, who reason that facing the cars lets them see danger coming. The American Academy of Pediatrics, the association of children's doctors in the United States, reports that almost a quarter of collisions between a bicycle and a car happen because the rider was going against the traffic. Drivers pulling out of a junction look for traffic where traffic belongs, and a bike coming the wrong way arrives from where nobody is looking.

What matters here: Helmet on and straps set, brakes tested, and ride the way the cars are going.

The seat you belong in

A seat belt is built to hold the strongest bones you have: your hip bones and your collarbone. On a small body the same belt sits across the soft middle instead, where there is nothing to take the load. A booster does one job, and the name says it: it lifts you until the belt reaches your bones.

The American Academy of Pediatrics sets out the stages, most recently reviewed in 2026.

Here is the fit test you can run yourself once you are in a booster. The lap belt should lie low and snug across the tops of your thighs, not up on your tummy. The shoulder belt should cross the middle of your chest and the middle of your shoulder, not your neck and not under your arm. If the belt is on your neck, you are not finished with the booster yet. And never tuck the shoulder belt behind your back: that strap is what stops you folding forward.

A note for the grown-up helping

The two numbers behind this lesson are for you rather than for your child. NHTSA recorded 7,080 pedestrians killed on United States roads in 2024, about one every 74 minutes, and 1,103 bicyclists killed in the same year. That is why the rules are not negotiable, and also why they are kept out of the child's version, which works better as a procedure than as a fear. Walk your child's real route with them and name the two or three genuinely awkward points: the blind corner, the driveway, the crossing where cars turn across the walk signal. Check the car seat stage against your seat's own height and weight limits rather than against a birthday, and if you can, have the installation checked by a certified technician.

Common misconceptions

• Mistake: a quiet road is a safe road. Quiet tells you about the last few seconds, not the next few. A car you cannot see is not a car that is not coming.
• Mistake: you should ride a bike facing the cars, like walking. Walking and riding are opposite. Pedestrians face the traffic, bicycles go with it, and riding against it is behind almost a quarter of bike and car collisions.
• Mistake: a booster seat is for babies. A booster is a belt adjuster, for anybody the adult belt does not fit yet, which is most people until about 4 feet 9 inches tall.

Where this leaves us

• Stop at the kerb, hold a hand, look left, right and left again, and keep looking as you cross.
• Walk, do not run. Cross at a corner, never between parked cars. If you cannot see the driver, the driver cannot see you.
• Under 10, you cross with an adult or a sibling over 12. No pavement means walk facing the traffic.
• Helmet on every ride, level and snug, and ride the way the traffic goes.
• Booster until the belt fits: low on the thighs, across the middle of the chest and shoulder. Back seat until 13.

Sources

1. National Highway Traffic Safety Administration. (2026). Pedestrian safety: walking safety tips to share with kids. U.S. Department of Transportation. nhtsa.gov
2. National Highway Traffic Safety Administration. (2026). Bicycle safety: helmets, avoiding crashes, and rules of the road. U.S. Department of Transportation. nhtsa.gov
3. American Academy of Pediatrics. (2026). Car safety seats: information for families. HealthyChildren.org. healthychildren.org
4. American Academy of Pediatrics. (2022). Bicycle safety: myths and facts. HealthyChildren.org. healthychildren.org

Four centimetres of water

A paddling pool in a back garden holds about four centimetres of water. An inch and a half. You could step over it without noticing.

The American Academy of Pediatrics, whose guidance on this was last reviewed in 2026, says a young child can drown in as little as an inch or two of water. Not because the water is deep. Because a small child who slips face down may not have the strength or the idea to push themselves back up.

That fact does most of the work in this lesson. The danger in water is almost never the depth.

The upshot: Any amount of water that can cover a face is enough. That is why the rules are about people watching, not about how deep it is.

What drowning actually looks like

Films get this wrong, and the wrong picture is dangerous, because it teaches you to wait for a sound that never comes.

In a film, a drowning person shouts, waves both arms and thrashes. In real life, the AAP describes drowning as quick and silent. A person in trouble is using everything they have to keep their mouth above water. There is no breath spare for shouting and no arm spare for waving. So an adult beside a pool cannot rely on hearing a problem. They have to be looking.

The water watcher

When there are several adults and several children, everybody assumes somebody else is watching, and so nobody is. The AAP fixes this with a job that one person holds at a time: the water watcher.

The water watcher has one job and no others. Not the barbecue. Not the phone. Not the conversation. Eyes on the children in the water. Because that is genuinely hard to do well, the AAP says to hand the job on every 15 to 20 minutes, so the person watching is always a fresh one. For younger children there is a stricter version called touch supervision: the adult stays within arm's length, close enough to take hold without taking a step.

The American Red Cross describes the same idea as layers of protection, and lists three: barriers that stop a child reaching water alone, life jackets, and close supervision. Layers, because each one is allowed to fail. No single layer is the plan.

Worth holding on to: One adult, one job, eyes on the water, swapped every fifteen or twenty minutes.

Four kinds of water, four different dangers

Water is not one thing. Reading across this table is more useful than memorising a list of rules.

Notice what changes across the row and what does not. The danger changes completely. The answer always includes an adult who is watching.

Water wings are not life jackets

This one matters enough to get its own heading. Armbands, rubber rings, inflatable unicorns and pool noodles are toys. The AAP says plainly: avoid floaties, water wings and inflatable toys, because they can deflate and they do not prevent drowning.

A life jacket is a different object. It is tested and approved, it is worn like a coat with the straps done up, and it turns you face up if you cannot do it yourself. On a lake, a river, the sea or a boat, that is the one to wear.

There is a second problem with armbands, and it is about your head rather than your arms. They make you feel like a swimmer when you are not one yet.

Learning to swim, and what counts as knowing how

The AAP says swimming lessons can start after the first birthday, depending on the child's readiness: how often they are around water, how they handle new things, and how comfortable they are.

But what does knowing how to swim mean? The Red Cross answers with something more useful than a distance. They call it water competency, and it is five things done in a row: enter the water, get a breath, stay afloat, change position, swim a distance, and then get out of the water safely.

Look at the first and the last. Getting in and getting out are on the list, because most trouble starts with a fall in and ends with being unable to reach the side. And knowing how to swim never cancels the watching rule. Strong swimmers get cold, get tired, get caught in currents and hit their heads. Swimming is one layer.

In short: Water competency is get in, breathe, float, turn, swim, get out. Not a distance badge.

If somebody is in trouble

Here is the hardest rule in the lesson, because it asks you not to do the thing you will most want to do.

If you see somebody struggling in the water, you do not go in after them. A person in trouble grabs whatever reaches them and pushes it down to get their own head up. That is not unkindness. It is what a panicking body does, and it is how one person in trouble becomes two.

Your job is to shout. Shout for the nearest adult, straight away, loudly, and keep shouting until somebody comes. If there is a lifeguard, shout for the lifeguard. Then stay where you are and keep pointing so the adult can find them. The Red Cross puts knowing what to do in an emergency alongside the barriers and the supervision, and for an adult that means knowing how to help safely and how to do CPR. For a child your age, helping safely means your voice, not your arms.

The other thing the water does

Water reflects sunlight, so an afternoon at a pool or a beach delivers far more sun than the same afternoon indoors.

The part of sunlight that burns you is called ultraviolet, usually shortened to UV. You cannot see it and you cannot feel it arriving. That is the catch: sunburn shows up hours after the damage is done, so by the time your skin is hot and pink, the burning finished long ago.

The AAP guidance, last updated in 2024, gives four layers here too.

1. Timing. Limit time in the sun between 10 in the morning and 4 in the afternoon, when UV is strongest.
2. Shade. A tree, an umbrella, a canopy. Babies under 6 months should be kept out of direct sunlight altogether.
3. Clothes. Lightweight long sleeves with a tight weave, a hat with a brim about 3 inches wide to cover the face, ears and the back of the neck, and sunglasses that block at least 99 percent of UV.
4. Sunscreen. Broad spectrum, SPF of at least 15 and up to 50, on every bit of skin the clothes do not cover.

SPF stands for sun protection factor, which is a measure of how much protection a sunscreen gives against burning. Broad spectrum means it handles both of the kinds of UV that reach you.

The step almost everybody skips is the reapplying. Sunscreen is not a coat of paint that lasts the day. The AAP says every 2 hours, and also after swimming, after sweating, and after drying yourself with a towel, because a towel takes it straight off.

A note for the grown-up helping

Name the water watcher out loud at the start of a session and hand the job on out loud when you swap, because the silent assumption that somebody is watching is the exact failure this rule exists to prevent. Check that any pool your child has access to has a four-sided barrier separating it from the house rather than a three-sided one that leaves the back door as a gate. Keep toilet lids latched and buckets emptied for toddlers. Nothing here is medical advice, and a child who has been in difficulty in water should be seen by a clinician even if they seem fine afterwards.

Common misconceptions

• Mistake: you will hear somebody drowning. Drowning is quick and silent. All the effort goes into keeping a mouth above water, and none is left for shouting.
• Mistake: armbands make a child safe. They are toys that can deflate. They are not approved life jackets, and they teach a false feeling of being able to swim.
• Mistake: a child who can swim does not need watching. Swimming is one layer. Cold, tiredness, currents and bumps do not care how good a swimmer you are.
• Mistake: you can feel a burn starting, and morning sunscreen lasts all day. UV gives no warning, and sunscreen needs to go back on every 2 hours and after every swim, sweat or towel.

Summing up

• A young child can drown in an inch or two of water, quickly and silently.
• One water watcher at a time, no phone, swapped every 15 to 20 minutes. Touch supervision, within arm's length, for the youngest.
• Layers of protection: barriers, life jackets, close supervision. Every layer is allowed to fail, which is why there are three.
• Pool fences go all four sides, at least 4 feet high, with a self-closing, self-latching gate.
• Water wings are toys. A Coast Guard approved life jacket is equipment. Water competency is get in, breathe, float, turn, swim, get out.
• If somebody is in trouble, shout for an adult. Do not go in.
• Sun: stay out of it from 10 to 4, find shade, cover up, and SPF 15 or more, reapplied every 2 hours and after every swim.

Sources

1. American Academy of Pediatrics. (2026). Water safety and young children. HealthyChildren.org. healthychildren.org
2. American Red Cross. (2026). Water safety: water competency and layers of protection. redcross.org
3. American Academy of Pediatrics. (2024). Sun safety: information for parents about sunburn and sunscreen. HealthyChildren.org. healthychildren.org

The places a swimming costume covers

Look at a swimming costume. It covers a few particular places on your body and leaves the rest out in the open. That is not an accident of fashion. Those places are the ones we call private parts.

Every part of your body has a real name, and the private ones are no different. The correct words are penis and testicles, or vulva and vagina, plus bottom, chest and nipples. Those are the words a doctor uses.

Families often invent softer words instead. The American Academy of Pediatrics, the association of children's doctors in the United States, advises using the proper names for all body parts, and there are three plain reasons.

1. A doctor or a nurse needs to know exactly where it hurts, and a made-up word does not tell them.
2. If something happened to you, you need words that everybody understands, so that nobody has to guess what you meant.
3. A body part with a silly name starts to feel like a part you are not supposed to mention. That is the opposite of what you want.

These are just names. They are not rude, and using them does not mean anything is wrong.

Key idea: Private does not mean shameful. It means yours.

The four rules

Everything in this lesson fits into four short rules. Learn them in this order, because each one leans on the one before it.

Rule one, in practice

Your body belongs to you. That sounds obvious until a relative arrives at the door and everybody expects a hug.

You are allowed to say no to a hug or a kiss. You can offer something else instead: a wave, a high five, a fist bump, or just hello. That is not rude, and it is not you being difficult. The AAP puts this under body autonomy, which means your body is under your own control, and says children should not be forced into physical contact with anyone.

The rule runs both ways, which is the part that is easy to miss. If you want to hug somebody, you ask first and you wait for an actual yes. A shrug is not a yes. Somebody going stiff and quiet is not a yes.

Remember: You ask, and you wait for a yes. So does everybody else, including grown-ups.

Rule two, and the two real exceptions

Your private parts are not for other people to look at or to touch. Nobody should ask you to look at or touch theirs either, and nobody should show you pictures or videos of private parts.

There are two ordinary exceptions, and it helps to name them, because a rule with unexplained holes in it is hard to trust.

• A doctor or a nurse, checking you or treating you, with a grown-up you trust in the room. Even then you may ask what they are doing and why, and they should tell you.
• A parent or carer helping you wash, or helping if you are hurt or sore there, when you still need the help.

Notice what both exceptions have in common: there is a reason, the reason is said out loud, and nobody asks you to keep it quiet. Anything outside that is not an exception.

Rule three: surprises yes, secrets no

Here is a distinction worth learning properly, because it does a lot of work.

A surprise is something happy that everybody is going to find out soon. A birthday present hidden in a wardrobe is a surprise. The waiting is part of the fun, and it ends.

A secret is something you are told to keep from people who love you, with no end to it. That is different, and it feels different too: heavy rather than exciting.

The rule is short. No grown-up ever asks a child to keep a secret about bodies, touching, or pictures. Not a teacher, not a coach, not a relative, not a family friend. If somebody does ask, the asking itself is the sign, and telling somebody is exactly the right thing to do.

There are sentences people use to make a child keep quiet. It will be our little secret. You will get in trouble. Nobody will believe you. Your family will be upset. None of them are true, and hearing one is another sign.

What matters here: If somebody asks you to keep a secret about bodies, that is the moment you tell.

Rule four: tell, and keep telling

A trusted adult is a grown-up you can go to who will listen and help. Most children can name a parent straight away. You want more than one, and you want at least one who does not live in your house: a teacher, a school nurse, a coach, a grandparent, a friend's parent.

Three names is a good number. Write them down.

Now the part that children are least often taught. Sometimes the first adult you tell does not do anything. Maybe they were busy, or did not understand, or did not want it to be true. That does not mean you were wrong and it does not mean you stop. You go to the next name on your list, and then the next, until somebody actually does something.

KidsHealth, the children's health site run by Nemours and reviewed by paediatricians, gives children the same short instruction: a child who is being hurt should tell a trusted adult.

One more thing, and it is not a small one. If a grown-up does something to a child that they should not do, it is never the child's fault. Not if the child was polite about it. Not if the child did not say no. Not if it happened more than once. Not if the child liked that person. The responsibility sits with the adult, every time.

And the United States National Library of Medicine, part of the National Institutes of Health, notes something that surprises people: most people who harm children in this way are already known to them, such as family friends, neighbours or babysitters. That is precisely why these rules are about what happens rather than about who somebody is.

A note for the grown-up helping

Use the anatomical words yourself, in an ordinary voice, well before you need them. Model rule one by asking your child before a hug and accepting no without shame or guilt, as the AAP suggests. Never promise a child you will keep what they tell you a secret, and if a disclosure comes, keep your face and voice calm, thank them for telling you, avoid interrogating or repeating the questions, and write down what was said in their own words. If you believe a child has been harmed, report it: the National Library of Medicine's guidance is simply that a suspicion should be reported, and in the United States the Childhelp National Child Abuse Hotline is 1-800-422-4453, staffed day and night. This course is not medical or legal advice.

Common misconceptions

• Mistake: the danger is strangers. Most people who harm children are already known to them. The rules work because they are about behaviour, not about whether somebody is familiar.
• Mistake: telling on a grown-up is telling tales. Telling tales is trying to get somebody into trouble over something small. Telling about being unsafe is always the right move, and you are never in trouble for it.
• Mistake: once you have said yes, you cannot change your mind. You can stop anything at any time, including a game, a tickle or a hug. Yes is not permanent.
• Mistake: private parts are rude, so we should not name them. They are body parts with names, like an elbow. Not naming them makes them harder to talk about at exactly the moment talking matters.

Looking back

• Use the real names: penis, testicles, vulva, vagina, bottom, chest, nipples. Private means yours, not shameful.
• Rule 1: my body belongs to me. You may say no to a hug and offer a wave instead, and you ask before touching anybody else.
• Rule 2: private parts are private, with two open exceptions, a doctor or nurse with your grown-up there, and a carer helping you wash or treating a hurt.
• Rule 3: surprises end and are happy. Secrets about bodies do not exist. Being asked to keep one is itself the warning.
• Rule 4: tell a trusted adult, and if nothing happens, tell the next one, and the next.
• It is never the child's fault, and you are never in trouble for telling.

Sources

1. American Academy of Pediatrics. (2023). Talking to your young child about sex: bodies, privacy and body autonomy. HealthyChildren.org. healthychildren.org
2. National Library of Medicine. (2025). Child sexual abuse. MedlinePlus, National Institutes of Health. medlineplus.gov
3. Deutsch, S. A. (Reviewer). (2024). Child abuse. KidsHealth, Nemours Foundation. kidshealth.org

Thirty-one blocks

Thirty-one blocks. That was the tower, and it had taken most of Saturday afternoon to build.

Then a sleeve caught the edge of it and the whole thing went over. Not all at once, which somehow made it worse. The top half went first, and then the rest.

Here is the question this lesson answers. Between the tower falling over and what happens next, there is a gap of about two seconds. What happens in that gap decides everything.

The point: You cannot choose the feeling. You can choose what you do in the two seconds after it.

Your body knows first

A feeling does not start in your head. It starts in your body, and it usually gets there before you have a word for it.

Anger often arrives as a hot face, a tight jaw, and hands that curl up without being asked. Worry is a tummy that will not settle and a chest that feels tight. Sadness is heavy: arms, legs, eyelids, all of it. Excitement is fast and fizzy and hard to sit still in.

This matters because a body signal is an early warning. If you can notice the hot face, you are still in the two-second gap. If you wait until you are already shouting, the gap has closed.

So the first skill is noticing. Not fixing, not calming down yet. Just noticing that something has started.

Three steps to put it into words

KidsHealth, the children's health site run by the Nemours Foundation and reviewed by clinicians, gives three steps for saying a feeling out loud.

1. Find the feeling's name.
2. Work out why you feel that way.
3. Put the two together in one sentence.

Their example is a good one to copy: I feel nervous about my spelling test tomorrow. Ten words, and it does two useful things. It turns a big cloudy thing into something with edges, and it tells another person exactly how to help.

You do not always have to know the why. Some days the feeling arrives without a reason attached, and saying so still helps. KidsHealth puts the reason for doing it plainly: it helps to know you are not alone with a problem or a worry.

Worth holding on to: Name it, say why if you know why, and put it in one sentence.

A bigger box of words

Most children have four feeling words: happy, sad, mad, scared. Four words for hundreds of feelings is like having four crayons.

Frustrated and disappointed both feel a bit like sad, but the answers are different. Frustrated wants a different method or a rest. Disappointed wants somebody to say that is genuinely rubbish. Getting the word right gets the help right.

The line, and it is a hard line

Now the sentence that this whole lesson is built around. Every feeling is allowed. Not every action is.

You are allowed to be furious about the tower. Nobody gets to tell you that you are not angry, or that you should not be, or that it was only blocks. The feeling is real and it is yours.

What you do with it is a separate question, with a separate answer.

Read down the middle column. Every one of those actions makes the situation worse and leaves the feeling exactly where it was.

Bringing the volume down

The quickest tool you have is your own breathing, and it is not a trick. The American Academy of Pediatrics describes attention to the breath as calming the nervous system and lowering stress hormones, which are the chemicals your body makes when it is under pressure.

Here is a version you can do anywhere, including at a desk with people around you.

1. Sit or stand still. Let your shoulders drop.
2. Breathe in slowly while you count to four in your head.
3. Breathe out slowly while you count to four.
4. Do it five more times.
5. When your mind wanders off, which it will, bring it back to the breath without telling yourself off. The AAP makes that part explicit: no judgement, just back to the breath.

The AAP suggests school-age children practise for 3 to 10 minutes, twice a day. That sounds like a lot until you notice the reason: practising when you are calm is what makes it available when you are not. Learning to breathe during a rage is like learning to swim during a flood.

Other things that work, and it is worth finding out which one is yours: moving fast for two minutes, getting a drink of water, stroking a pet, drawing the feeling instead of saying it, or going somewhere with nobody in it.

In short: Practise the breathing on a good day so it is there on a bad one.

When a feeling needs a grown-up

Most feelings do their job and move on. Some do not, and those are the ones to hand over rather than carry.

Tell a trusted adult when a feeling will not go away after days, when it stops you eating or sleeping, when it makes you want to hurt yourself or somebody else, when you are frightened and cannot say why, or when you are dreading something every single morning.

None of those mean anything is wrong with you. They mean a feeling has got bigger than a child should have to manage alone, which is what grown-ups are for.

A note for the grown-up helping

The most useful thing you can do is separate the two halves out loud yourself: name the feeling as legitimate, then name the action as not allowed. "You are allowed to be furious. You are not allowed to hit." A child who hears the feeling accepted stops having to argue for it. Avoid "calm down" and "you are fine", which tell a child their reading of their own body is wrong. Practise the breathing together on ordinary days rather than introducing it mid-storm. If low mood, worry or anger is persistent, is getting in the way of school, friendships or sleep, or includes any talk of self-harm, take it to your paediatrician. This course is not medical advice.

Common misconceptions

• Mistake: some feelings are bad feelings. Feelings are information, not behaviour. Anger tells you something felt unfair. What you then do is the part that can be right or wrong.
• Mistake: calming down means the feeling has gone. Calming down lowers the volume so you can think. The feeling often stays, and that is fine.
• Mistake: talking about a feeling makes it bigger. Naming a feeling gives it edges. A cloudy dread is harder to carry than a sentence.

The short version

• Your body notices a feeling before your head names it. The hot face is an early warning.
• Three steps: name it, say why, put it in one sentence.
• More words means better help. Frustrated, disappointed, nervous, embarrassed, jealous, lonely and proud are all different.
• Every feeling is allowed. Not every action is.
• Breathe in for four, out for four, six times. Practise it when you are calm.
• A feeling that will not shift, or that stops you eating or sleeping, goes to a trusted adult.

Sources

1. Lyness, D. (Reviewer). (2023). Talking about your feelings. KidsHealth, Nemours Foundation. kidshealth.org
2. American Academy of Pediatrics. (2023). Just breathe: the importance of meditation breaks for kids. HealthyChildren.org. healthychildren.org

Three trays move up one place

At Tuesday lunch, three children at a table slide their trays up one place each. There is now no gap. A fourth child, holding a tray, stands there for about four seconds and then walks to the end of the hall and eats alone.

Nobody hit anybody. Nobody said a word. If a teacher had walked past at that exact moment they would have seen four children having lunch.

Hold on to that scene. We are going to test three wrong answers against it, and the third one is the one nearly everybody gives.

First, the ordinary kind of trouble

Most friendship trouble is not bullying at all. It is two people who both want the swing, or one person who told a thing they were asked not to tell. These are normal, they happen to everybody, and they have a repair.

The repair has four steps, and it works better if you learn it before you need it.

1. Say what happened, just the facts, with no insults in it. "You took the ball while I was still playing."
2. Say how it felt. One sentence, using a real feeling word. "That felt like you did not care that I was there."
3. Listen to their version. All of it, without interrupting, even the part you think is wrong. You do not have to agree. You have to hear it.
4. Decide what happens next. Together. Take turns with the ball, or split the time, or play something else.

Then there is the apology, which most people do badly. A real apology has three parts: name what you did, say why it was wrong, and ask what would help. "I took the ball while you were playing. That was unfair because you were there first. Do you want to go first now?"

Compare that with the usual version: "Sorry, but you were being annoying." That is not an apology. The word but cancels everything before it.

Why this matters: Most fights are fixable, and the fixing is a skill you can practise like handwriting.

Wrong answer one: bullying is hitting

Back to the lunch table. Nobody was hit, so it was not bullying. Right?

StopBullying.gov, run by the United States Department of Health and Human Services, names three kinds, and only one of them involves bodies.

Look at the middle row. Leaving somebody out on purpose is on the official list, by name. The tray thing is in the table.

Wrong answer two: it counts if it was mean

The opposite mistake is to call everything unkind bullying, which makes the word useless.

StopBullying.gov sets three tests, and all three have to be true.

1. The behaviour is unwanted and aggressive. Not a game both people are enjoying.
2. There is a power imbalance, real or felt. The site lists physical strength, popularity, and knowing something embarrassing. One against four is a power imbalance too.
3. It is repeated, or it could easily happen again.

A one-off unkind remark from somebody your own size, who stops when you say stop, is not bullying. It is somebody being unkind, and it needs the four-step repair, not a report.

Now run the lunch table through the tests. Unwanted: yes. Power imbalance: three against one. Repeated or likely to be repeated: that is the question, and if it happened again on Wednesday, all three are true.

The upshot: Unwanted, unequal, and again. All three, or it is a different problem with a different fix.

Wrong answer three: they were only joking

This is the one almost everybody reaches for, and it fails for a reason worth understanding properly.

Look at the three tests again. Not one of them mentions what the person doing it meant. The tests are about what happened and what it did. That is deliberate, because intention is invisible and unprovable, and because a joke that one person is not enjoying is not a joke that two people are having.

Here is the useful check, and it is short. A joke stops when somebody says stop. If it does not stop, it was never a joke.

If it is you: stop, walk, talk

The American Academy of Pediatrics gives three steps in this order.

• Stop. Say stop, once, in a firm voice. Not shouting, not pleading. Then you have said it, and everybody heard.
• Walk. Walk away calmly. Walking away is not losing. It removes the audience, which is what most of this is for.
• Talk. Tell a trusted adult, the way you learned in the body-safety lesson. If the first one does nothing, tell the next one.

Two more things that help. Stay near your friends, because being on your own makes you an easier target. And write down what happened and when, because dates and details are what make an adult able to act.

If it is not you: the person watching

Most of the people in that lunch hall were not bullying anybody and were not being bullied. They were watching. That is the biggest group, and it is the one with the most power.

The AAP is blunt about the first rule: do not just watch, because that gives the person bullying the attention they want. Then there are three things you can actually do.

1. Get the person out. You do not need a speech. "Come and sit with us" and "Do you want to go to the library?" both work, and neither one starts a fight.
2. Be with them afterwards. Sitting next to somebody at lunch the next day is a bigger deal than it sounds.
3. Get an adult. And here is the sentence to keep: the AAP says that seeking help for somebody who has been attacked is not tattling.

Remember: The person watching decides whether it is one person being cruel or a crowd joining in.

The same rules, with a screen in front of them

Cyberbullying is bullying that happens on phones, computers and tablets, through messages, apps, social media, forums and games. The rules do not change. Three things make it harder.

So the rules for a screen are these. Do not pass it on: forwarding a cruel message makes you part of it. Do not reply, because a reply is the attention it was sent to get. Keep the evidence with a screenshot. Block the account. And tell an adult, which is the whole answer to the third row of that table, since an adult who is not told cannot notice.

The test before you type anything about anybody is one sentence long. Would you say it to their face, with a grown-up standing there? If not, do not type it.

A note for the grown-up helping

The federal figures cover older children than this course does, which is worth knowing before quoting them: the 2022 School Crime Supplement found about 19.2 percent of students aged 12 to 18 reported being bullied, and the CDC's 2023 Youth Risk Behavior Survey found 19 percent of students in grades 9 to 12 reported being bullied on school property in the previous year. No equivalent primary-school figure sits behind this lesson. What is worth doing at this age is rehearsal: practise the firm stop voice, and practise the bystander lines, because both need to be automatic. If your child is being bullied, write a dated record and take it to the school in writing rather than in a corridor conversation, and keep the child's device rather than removing it, since losing the phone reads to a child as a punishment for telling.

Common misconceptions

• Mistake: bullying means hitting. Leaving somebody out on purpose and spreading rumours are on the official list, under social bullying.
• Mistake: anything unkind is bullying. Three things have to be true: unwanted and aggressive, a power imbalance, and repeated or likely to be. Otherwise it is an ordinary fight, and it has a repair.
• Mistake: it does not count if they were joking. None of the three tests mentions what somebody meant. A joke stops when somebody says stop.
• Mistake: walking away is losing. Walking away removes the audience, which is most of what the behaviour is for.

What you now know

• Ordinary fights get four steps: what happened, how it felt, listen, decide. A real apology names the thing, says why it was wrong, and asks what would help.
• Three kinds of bullying: verbal, social, physical. Leaving somebody out on purpose is on the list.
• Three tests, all three needed: unwanted and aggressive, a power imbalance, repeated or likely to be repeated.
• They were only joking is not one of the tests. A joke stops when somebody says stop.
• Target: stop, walk, talk. Firm voice, calm exit, trusted adult.
• Watcher: do not just watch. Get them out, sit with them after, get an adult. That is not tattling.
• Online: persistent, permanent, hard to notice. Do not pass it on, screenshot, block, tell.

Sources

1. StopBullying.gov. (2024). What is bullying. U.S. Department of Health and Human Services. stopbullying.gov
2. StopBullying.gov. (2024). What is cyberbullying. U.S. Department of Health and Human Services. stopbullying.gov
3. American Academy of Pediatrics. (2025). Bullying: it's not OK. HealthyChildren.org. healthychildren.org

The box of matches behind the bike sheds

Behind the bike sheds, somebody in your year holds out a box of matches and says go on.

You already know the answer. You learned it in the fire lesson: matches are a tool, and found ones get reported, not collected. Knowing is not the problem.

The problem is the six seconds after go on, with three people looking at you. That is what this lesson is about. Not what is right. How to say it out loud when saying it is hard.

The point: Knowing the right answer and being able to say it are two different skills. This lesson is the second one.

Why no is hard

It helps to name the three reasons, because a reason you can see is easier to work around.

1. You do not want to look boring. Saying no can feel like saying you are the sort of person nothing happens to.
2. You do not want to lose the person. If they are your friend, no feels like it might cost you something.
3. There is no time. You are asked in the middle of something, with people waiting, and you have not had a second to think.

Notice that none of the three is about not knowing the rules. That is why more rules do not help and practice does.

The refusal ladder

Five moves, from smallest to largest. Start at the top. Most things end at step one.

Step three is the one most worth learning, because most pressure works by making you explain yourself. Once you are explaining, you are in an argument, and they get to answer each reason. The broken record refuses to start the argument. No thanks. No thanks. No thanks. It is boring, which is exactly the point.

Bottom line: You do not owe anybody a reason, and the moment you give one, you are negotiating.

Three things that make a no work

The words matter less than these three.

• Early. The first time, not the fourth. Every round you wait makes the next one harder, because you have already half agreed.
• Short. A long no sounds like a maybe. Two or three words is stronger than a paragraph.
• Matched. Your feet should be doing what your mouth is doing. Saying no while staying exactly where you are tells people to keep asking. Say it and turn.

Do not do it on your own

KidsHealth, run by the Nemours Foundation and reviewed by clinicians, gives five strategies for handling pressure from other children, and two of them are about other people rather than about you.

The first is having at least one other person who is willing to say no as well. Two children refusing is a completely different thing from one, because the first one is the odd one out and the second one makes it a group.

The second is a line to say when it is your friend on the spot rather than you: I am with you, let's go. Six words that turn one person refusing into two people leaving.

KidsHealth also says plainly that if the pressure is hard to handle, get advice from an adult you trust: a parent, a teacher, or a school counsellor.

Here is one more thing families can set up in advance. Agree a code word: one ordinary word you can say or send to a grown-up that means come and get me now, and no questions until later. It lets you leave without having to explain yourself in front of everybody. Agree yours this week, before you need it.

Worth holding on to: A second person changes everything. Arrange yours before the moment arrives.

Tattling and telling

Somewhere around six or seven, children get told to stop tattling. It works, and it has a side effect: some children then stop reporting the things that genuinely needed reporting.

So learn the difference properly.

Tattling is trying to get somebody into trouble over something small, where nobody is hurt or in danger, and where you could probably have sorted it out yourself.

Telling is trying to get somebody out of trouble, or to stop somebody being hurt, frightened or put in danger.

The American Academy of Pediatrics puts the bystander version in one sentence that is worth memorising: seeking help for somebody who has been attacked is not tattling.

And here is the rule for everything that does not fit neatly into the table. If you are not sure, tell. An adult would far rather hear ten things that turned out to be small than miss the one that mattered. Getting it wrong in that direction costs nothing.

How to ask for help so that it works

Asking is a skill, and children are often not taught the shape of it.

1. Pick the person. One of the names on your trusted adults hand.
2. Pick the moment, or make one. "Can I talk to you? It is important." That sentence gets attention, so it is worth having ready.
3. Say the facts first. What happened, who, when. Not how you feel about it yet, because facts are what an adult can act on.
4. Then say what you want. "I want it to stop." "I want you to come with me." "I do not want you to tell them it was me yet."
5. If nothing happens, go to the next name. Same as the body-safety rule, for exactly the same reason.

A note for the grown-up helping

The words in this lesson only work if they have been said out loud before, so run the ladder as a role play rather than reading it. Take the "do not tattle" instruction out of your own vocabulary and replace it with the question, is anybody hurt, unsafe or frightened, which a child can actually apply. Agree the code word this week and honour the no-questions-until-later half of the deal the first time it is used, or it will not be used twice. When your child does tell you something, respond to the telling before you respond to the content, because how the first report goes decides whether there is a second one.

Common misconceptions

• Mistake: a good no needs a good reason. A reason gives the other person something to argue with. I do not want to is a complete answer.
• Mistake: walking away is rude. Walking away ends the conversation, which is the whole aim. You can be perfectly friendly the next day.
• Mistake: telling an adult is always tattling. Tattling is about small things where nobody is hurt. If somebody is hurt, unsafe or frightened, it is telling, and it is right.
• Mistake: you have to be certain before you tell. You do not. If you are not sure, tell, and let the adult work out what it was.

Putting it together

• Knowing the answer and saying it are different skills. The second one needs practice.
• The ladder: no thanks, I do not want to, the same words again, nah and walk away, let's do something else.
• Early, short, and matched by your feet.
• One other person saying no changes everything. So does the line I am with you, let's go.
• Agree a code word with your family that means come and get me, no questions until later.
• Tattling gets somebody into trouble over something small. Telling gets somebody out of trouble or out of danger.
• If you are not sure which it is, tell.

Sources

1. Lyness, D. (Reviewer). (2022). How to handle peer pressure. KidsHealth, Nemours Foundation. kidshealth.org
2. American Academy of Pediatrics. (2025). Bullying: it's not OK. HealthyChildren.org. healthychildren.org
3. American Academy of Pediatrics. (2023). Talking to your young child about sex: bodies, privacy and body autonomy. HealthyChildren.org. healthychildren.org

The shoes that fitted in March

A pair of school shoes fits perfectly in March. By June the same child cannot get them on.

Feet are often the first thing to go. They grow before the legs do, which is one reason people this age trip over nothing at all. Your brain has a map of how long your arms and legs are, and for a while that map is out of date.

This lesson is about the rest of that process. It is called puberty, and KidsHealth defines it in one line worth keeping: the time when your body begins to develop and change as you move from a child to an adult.

It happens to everybody. It is not an illness, it is not a problem, and there is nothing about it you are not allowed to ask.

Key idea: Puberty is a normal set of changes, it takes years rather than weeks, and everyone goes through it.

What starts it

Tucked under your brain, about the size of a pea, is the pituitary gland. At some point it starts sending out hormones.

A hormone is a chemical message. It is made in one part of the body, travels in your blood, and tells a different part what to do. Nobody decides to send them and you cannot feel them going.

Those messages land in different places depending on your body. In girls they reach the ovaries, which start making a hormone called oestrogen. In boys they reach the testes, which start making one called testosterone. Those two hormones do most of the work from then on.

When, roughly

Here is where the word roughly is doing real work.

Two careful sources, and they do not agree exactly on the upper end for boys. That is honest science rather than a mistake: the edges of a normal range are a judgement, and different expert groups draw them slightly differently.

Look at the width of those bands. Five or six years. Two children who are exactly the same age can be at completely different points, and both of them are normal. One of you might be finished before the other has started.

So: being first is normal. Being last is normal. There is no queue and nobody is behind.

Remember: The normal range is years wide. Early is normal, late is normal, and neither one is a score.

What happens to everybody

Some of it is the same whatever body you have.

• A growth spurt. You get taller faster than at any time since you were a baby.
• More sweat, and a new smell. Your sweat glands change, so sweat that used to smell of nothing now does not. This is why a daily wash, clean clothes every day and deodorant become a real routine rather than a nag.
• Hair in new places. Under the arms, and in the pubic area between your legs.
• Oilier skin and hair, and spots. Acne is spots caused by blocked pores, and it is extremely common at this age.
• Bigger feelings. Moods can swing further and faster than you are used to. The tools from the feelings lesson are the ones to use here: notice the body signal, name it, breathe, and tell somebody if it will not shift.

What differs

Two things from that table need proper explaining rather than a row in a box.

A period, or menstruation, works like this. Inside a girl's body is a uterus, sometimes called the womb, which is where a baby could grow one day. Every month the lining of the uterus thickens, and if no baby starts growing, that lining comes away and leaves the body through the vagina as blood, over a few days. It is not an injury and it is not a sign that anything is wrong. Some people get aching or cramps with it and some do not. Pads, period pants or tampons catch the blood. Keep a spare pad in your bag once periods are close, and if one starts at school, tell a teacher or go to the school office. They have supplies and they have done this many times before.

For boys, erections, when the penis becomes stiff, happen more often and often for no reason at all. They pass. During sleep, semen can come out, which is sometimes called a wet dream. It is normal, it is not wetting the bed, and it is nothing to be embarrassed about.

The changing room problem

The worst place to work out whether you are normal is a changing room, and the reason is arithmetic.

You can see about ten people. They are all roughly your age, and puberty spreads over five or six years. So at any moment some of them have started, some have not, and some are halfway. Whatever you conclude from that sample, you will be comparing yourself against a snapshot of people on completely different timetables.

The other reason is simpler. Most of the changes on that list are invisible from outside, and the visible ones arrive in different orders.

So what?: You cannot tell how you are doing by looking at other people. There is no chart you are meant to be on.

Who to ask

Anything on this list is a fine thing to ask a grown-up about. A parent or carer, a school nurse, or your doctor. If you would rather write it down than say it out loud, write it down and hand it over: that counts.

There is no question here that is silly, rude or too much. Adults who work with children have been asked all of them before.

A note for the grown-up helping

Start before it starts. A child who first hears about periods when one arrives has had a frightening day that was entirely avoidable. Answer the question that was actually asked, at the size it was asked, using the anatomical words from the body-safety lesson so that nothing acquires a whisper around it. Keep supplies in the house and visible before they are needed, for every child in it. NICHD defines precocious puberty as signs beginning before age 8 in girls or before age 9 in boys, and treats markedly delayed puberty as a reason for assessment too: either is a conversation with your paediatrician rather than a cause for alarm. This course is not medical advice.

Common misconceptions

• Mistake: puberty happens all at once. It takes several years. The first changes and the last ones can be four or five years apart.
• Mistake: being first or last means something is wrong. The normal band runs from 8 to 13 in girls and from 9 to 14 or 15 in boys. Both ends of that are ordinary.
• Mistake: a period means something is injured. It is a monthly process in a healthy body, not a wound. Cramps are common; anything that stops you doing normal things is worth a doctor's opinion.
• Mistake: breast growth in a boy means something has gone wrong. KidsHealth lists temporary breast growth as a normal part of puberty in boys. It usually settles on its own.
• Mistake: washing more or less changes when puberty starts. Nothing you eat, wear or do sets the timing. Hormones do, and they are not taking requests.

The takeaway

• Puberty is the change from a child's body to an adult's. It happens to everybody and it takes years.
• The pituitary gland sends hormones. Ovaries make oestrogen, testes make testosterone.
• Usually 8 to 13 in girls and 9 to 14 or 15 in boys, depending on which expert group you ask.
• Everybody: growth spurt, more sweat and smell, new hair, oilier skin and spots, bigger feelings.
• Girls: breasts first, then hips, then periods about two years later. Boys: testicles and penis first, then height, shoulders, voice and facial hair.
• A period is the lining of the uterus leaving through the vagina over a few days. Normal, not an injury.
• A changing room is the worst place to judge yourself. Different clocks, different orders.
• Ask a parent, a school nurse or a doctor. Nothing here is a silly question.

Sources

1. KidsHealth Medical Experts (Reviewers). (2023). All about puberty. KidsHealth, Nemours Foundation. kidshealth.org
2. Eunice Kennedy Shriver National Institute of Child Health and Human Development. (2021). About puberty and precocious puberty. National Institutes of Health. nichd.nih.gov
3. American Academy of Pediatrics. Puberty. HealthyChildren.org. healthychildren.org

One sheet of paper and a pen

Get a sheet of paper, the biggest one in the house, and a pen. This lesson makes something that goes on the fridge tonight.

Everything you have learned in this course is either a number or a rule, and both kinds are useless sitting in a lesson. The poster is how they get out.

The core of it: The point of a health course is not that you know the numbers. It is that you notice, for one week, whether you are doing them.

The numbers, all in one place

Here is the whole course as a table. Every figure in it came from an organisation named in the lesson it came from.

And the rules, which do not have numbers.

• You cannot tell what is in a container by looking at it.
• Two ways out of every room. Get low and go. Get out and stay out.
• If you cannot see the driver, the driver cannot see you.
• Nobody swims without somebody watching.
• My body belongs to me. Private parts are private. No secrets about bodies. Tell, and keep telling.
• Every feeling is allowed. Not every action is.
• A joke stops when somebody says stop. If you are not sure whether to tell, tell.

Why five, and why small

You cannot do all of that at once, and trying is the quickest way to do none of it. So pick five.

Then make each one small enough to be boring. This is the part people get wrong, so here are the three tests a habit has to pass before it goes on the poster.

1. Is it something you do, rather than something you stop? "Drink water with lunch" beats "no fizzy drinks". A habit you can do is something you can tick. A habit you avoid is invisible.
2. Could somebody else tell whether you did it? "Be healthier" fails. "Walk to school on Tuesday and Thursday" passes.
3. Is it attached to something that already happens? Habits stick to other habits. After breakfast. Before the bath. When you get in from school. The thing that already happens becomes the reminder.

Why this matters: A habit you can tick is a habit you can see. A habit you cannot see is a wish.

Making the poster

Now build it. This takes about fifteen minutes.

1. Write My Five Habits across the top, and your name under it.
2. Down the left, write your five habits, one per line, each one passing all three tests.
3. Across the top of the grid, write the seven days: Mon, Tue, Wed, Thu, Fri, Sat, Sun.
4. Rule the lines so you have five rows and seven columns. Thirty-five boxes.
5. Stick it where you will see it without looking for it. The fridge, the back of your bedroom door, next to the toothbrushes.

One rule about the ticking: do it at the same time each day, and do it with somebody. Checking it with a person at the end of the day is what stops the poster quietly becoming wallpaper by Wednesday.

What to do with a gap

You will miss some. Everybody misses some. What you do with a gap is the actual test.

A missed day is one empty box. It is not a failed week, it is not a reason to take the poster down, and it is certainly not evidence about what sort of person you are. Five days out of seven is five days that happened.

At the end of the week, sit down with your grown-up and read the grid. Three questions.

• Which row has the most ticks? That habit is working. Leave it exactly as it is.
• Which row has the fewest? Do not try harder at it. Ask why. Usually a habit fails because it was too big, or because it was not attached to anything.
• What would make that row easier next week? Shrink it, move it earlier, or attach it to something else.

Then rewrite that one line and run another week.

What matters here: A habit that keeps failing is not a person failing. It is usually a habit that was written badly.

The honest bit

A course cannot make anybody do anything. It can hand you a number, tell you where the number came from, and show you what checking it looks like.

What the poster actually does is narrow. It makes a thing you would not otherwise notice visible for seven days, and it puts one other person in the room while you look at it. That is not a small effect, but it is not magic either, and it only works while the poster is up.

So when this week is finished, write the next five. Some will be the same and some will not, and that is what the sheet of paper is for.

A note for the grown-up helping

Your job in this lesson is the daily check-in, and it should take about ninety seconds. Ask which boxes got ticked, not why the empty ones are empty. Do not attach rewards or consequences to the grid: the moment a tick buys something, the child is managing you rather than the habit, and the record stops being honest. At the end of the week run the three questions and let your child rewrite the failing line themselves. If a health habit is genuinely difficult in your household, that is a conversation worth having with your paediatrician rather than a poster problem. Nothing in this course is medical advice.

Common misconceptions

• Mistake: a good habit should be ambitious. Ambition is what makes a habit unmeasurable. Boring and specific beats impressive and vague every time.
• Mistake: missing a day ruins the week. One empty box is one empty box. The grid is a record, not a judgement.
• Mistake: knowing the numbers is the same as doing them. Everybody in this course now knows 60 minutes and 20 seconds. The poster exists because knowing is the easy half.

Pulling it together

• The numbers: half a plate, 9 to 12 hours, 60 minutes, 20 seconds, 2 minutes twice a day, SPF 15 and back on every 2 hours.
• Pick five habits, not fifteen.
• Three tests: something you do, something somebody else could check, and attached to something that already happens.
• Five rows, seven columns, somewhere you cannot miss it.
• Tick at the same time each day, with one other person.
• A gap is one box, not a verdict. Read the grid on Sunday and rewrite the worst line.
• Then do another week.

Sources

1. U.S. Department of Agriculture. (2026). MyPlate: the five food groups. Center for Nutrition Policy and Promotion. myplate.gov
2. U.S. Department of Health and Human Services. (2018). Physical Activity Guidelines for Americans (2nd ed.). Office of Disease Prevention and Health Promotion. odphp.health.gov
3. American Academy of Pediatrics. (2026). Healthy sleep habits: how many hours does your child need? HealthyChildren.org. healthychildren.org
4. Centers for Disease Control and Prevention. (2024). About handwashing. Clean Hands. cdc.gov