Chapter 1: How Your Brain Works

Chapter Introduction

Hi. I am the Turtle.

We have met before.

If you read my G3 chapter — Your Brain and You — you already know what your brain does. You already know that your brain helps you think, remember, learn, feel, and move. You already know that your brain is still growing, and that sleep, real food, play, and curiosity all help it grow. You already know that all feelings are okay, and that when feelings get big or hard, you tell a trusted grown-up.

Welcome back. The Turtle is glad to see you again.

You are nine or ten years old now. You are bigger than you were at G3. Your brain has grown new connections since we last talked. You can read longer chapters. You can hold more questions in your head at once. You are ready for the next step.

This chapter has three big ideas, and each one is one step beyond what we talked about at G3.

The first big idea is that your brain works like a team. At G3 I told you that different parts of your brain do different jobs and they all work together. This time I will tell you a little more about what those parts are and what each one does. Like a soccer team has a goalie, a defender, and a striker — your brain has a thinking part, a feeling part, a memory part, and more. They all play different positions on the same team.

The second big idea is how your brain learns. At G3 I told you about connections getting stronger. This time we will go deeper. You will learn about attention — what it is, why it matters, and that it is something you can practice. You will learn about memory — short kinds and long kinds. You will learn what really helps your brain learn the most.

The third big idea is the most important one, like at G3. Your brain makes feelings, and feelings can be complicated. Sometimes you feel two things at once. Sometimes a memory makes you feel something. Sometimes you do not know what you feel. The Turtle wants you to know that all of that is normal. And the most helpful thing — same as G3, but the Turtle is going to say it again because it matters — is to tell a trusted grown-up about big or hard feelings.

The Turtle is patient. Take a slow breath. Let's begin.

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Lesson 1.1: Your Brain Works Like a Team

Learning Objectives

By the end of this lesson, you will be able to:

• Describe your brain as a team of parts that work together
• Name four jobs different parts of your brain do
• Notice that your brain is doing many things at once
• Understand that every brain is a little different — and that is good
• Pay attention to which "part" of your brain you are using during a task

Key Terms

The Turtle Story

Picture a soccer team. Eleven players on the field. Each one has a different job.

The goalie protects the goal. The defenders stop other players from scoring. The midfielders run all over the field, helping wherever they are needed. The strikers try to score goals. The coach watches from the sidelines and helps the team play together.

If you take away the goalie, the team has a hole. If the defenders all run forward at the same time, the back of the field is empty. If the strikers never pass to each other, no one scores. The team works because every player does their job and trusts the other players to do theirs.

Your brain is like that.

At G3, I told you that different parts of your brain do different jobs. That is true. What I did not tell you at G3, because you were younger, is that the parts have names, places, and specialties. Some parts of your brain are toward the front. Some are deep in the middle. Some are at the back. Some are on the top. They are all in your head, but they live in slightly different neighborhoods inside it.

The Turtle is not going to teach you the full anatomy of the brain at G4. That comes later. (You will meet the official names for the brain parts at G6, when you are 11 or 12. That is the right age for those names.) At G4, I will teach you the parts by their jobs. Five jobs. Five teammates. Let me introduce them.

Meet the Team

1. The Thinking Part. This is the part of your brain at the very front, right behind your forehead. Put your hand on your forehead. The thinking part is just inside, on the other side of the bone.

The thinking part is the planner. The decision-maker. The "what should I do next" part. When you are working on a math problem, the thinking part is doing the work. When you decide which shoe to put on first, the thinking part is choosing. When you stop yourself from saying something silly because you know it will hurt a friend's feelings, the thinking part is helping you pause.

The Turtle wants you to know one important thing about the thinking part. It is still growing. Your thinking part will keep growing all the way through high school and into your early twenties [1]. That is why grown-ups sometimes seem better at planning, at waiting, at not getting upset over little things — they have more years of thinking-part growth. You will get there too. The Turtle is patient with this. So should you be.

2. The Feeling Part. Deep in the middle of your brain — not on the outside, but tucked inside — is the part that makes feelings. Happy. Sad. Scared. Mad. Excited. Calm. Worried. All the feelings you met at G3 (eighteen of them in the Turtle's roster, remember?) come from this part of your brain.

The feeling part is fast. Faster than the thinking part. That is why sometimes you feel something before you understand why. You see a big dog, and your heart jumps — even before your thinking part has figured out whether the dog is friendly or not. The feeling part fires first, and the thinking part catches up.

This is normal. This is how brains have worked for a very long time. The feeling part was helping your great-great-great-grandparents keep safe long before anyone built houses or wrote down stories. The feeling part is one of the oldest parts of your brain [2].

3. The Memory Part. Also deep in your brain, near the feeling part, is the memory part. This is the part that holds memories — your friend's name, what your kitchen looks like, what happened at your last birthday, the words to your favorite song.

The memory part is amazing. It does not just hold memories — it builds them, slowly, while you live. We will talk much more about how memory works in Lesson 2. For now, just know: deep in your brain, the memory part is quietly saving pieces of your life.

4. The Moving Part. Along the top of your brain, like a headband, is the part that controls how your body moves. When you wave to a friend, the moving part of your brain told your hand what to do — without you thinking about it.

The moving part talks to your muscles through long nerves that run down your spine and out to every part of your body. The Lion (Coach Move) told you about this in Moving and Your Body at G3 — your brain tells your muscles to pull on your bones, and that makes movement. The moving part is the bossy headband on top of your brain that gives those orders [3].

5. The Sensing Parts. Different parts of your brain are connected to your senses. The seeing part is at the back of your brain. The hearing part is on the side. The touch part is along the top. The smelling and tasting parts are deep inside. Each one takes in a different kind of information from the world — pictures, sounds, feelings, smells, flavors — and sends it to the rest of your brain to use.

Right now, while you are reading, the seeing part is doing a lot of work. Your eyes are taking in the shapes of the letters; the seeing part is turning those shapes into words; other parts are turning the words into meaning; the memory part is connecting the meaning to things you already know. All of that, in a fraction of a second, every time you read.

The Turtle thinks brains are wonderful for this. Most kids never stop to think about it.

All the Parts Together

Here is the most important idea of this lesson. The parts of your brain do their jobs at the same time, and they pass information back and forth constantly.

Imagine you are at a birthday party. You see a friend across the room (seeing part). You feel happy (feeling part). You remember the joke they told yesterday (memory part). You decide to walk over to them (thinking part). Your legs move to take you across the room (moving part). All of those things happen together. Smoothly. Without you having to plan each one.

Your brain is doing this constantly. Right now, every part is busy. You are reading (seeing, thinking, memory). You are sitting up (moving). You are maybe feeling curious or tired or excited about the next paragraph (feeling). All of those parts are passing notes to each other so quickly that you do not feel them as separate things — you just feel like you.

That sense of feeling like you is the result of the whole team working together. The Turtle thinks this is one of the most amazing things about being a person.

Every Brain Is a Little Different

The Turtle wants you to know something important.

Every brain is a little different. No two brains in the world are exactly the same — not even twins'.

Some kids have brains that learn to read very fast. Some kids' brains take longer with reading and are great at other things. Some kids' brains love numbers. Some kids' brains love stories. Some kids' brains are quiet inside. Some kids' brains are noisy inside.

And some kids have brains that work in ways that scientists and doctors have given names to:

• Autism is a way the brain works that affects how some kids see the world, feel about social stuff, handle senses, and connect with other people. Kids who are autistic often have brains that focus deeply on things they love, notice details other kids miss, and need their own ways of doing things.
• ADHD (which stands for attention deficit hyperactivity disorder, but the Turtle will just say "ADHD") is a way the brain works that affects attention and how much energy a kid has. Kids with ADHD often have lots of ideas, big energy, and find sitting still hard.
• Dyslexia is a way the brain works with reading and writing. Kids with dyslexia often see letters and words differently than other kids — and many of them are also great thinkers, creators, and problem-solvers.
• Sensory differences mean that a kid's senses pick up the world more strongly or differently than other kids' senses. Bright lights might feel really bright. Loud noises might feel really loud. Certain clothes might feel really itchy.

All of these are real ways brains work. All of them are normal. They are part of what scientists and grown-ups call neurodiversity — the idea that brains naturally come in lots of different kinds, and that is good for the world [4, 5].

If your brain works in one of these ways, the Turtle is for you. You and your trusted grown-ups know what your brain needs. Doctors, teachers, school counselors, and family help. The Turtle has been working with brains of every kind for a long time and has never seen a "wrong" brain.

If a friend's brain works differently than yours, the Turtle's advice is simple: be kind, be curious, and treat them the way you would want to be treated. Different brains are part of what makes the world interesting.

Notice Your Brain Team Today

Here is something the Turtle wants you to try.

Pick one ordinary thing you did today. Could be a math problem, a conversation with a friend, riding your bike, eating breakfast, anything. Now think:

• Which "part" of your brain did the thinking work?
• Which part felt something during it?
• Did your memory part bring anything up?
• Did your moving part do something?
• Which senses were doing their jobs — seeing, hearing, touching, smelling, tasting?

You probably used several parts at once. That is the team in action. The Turtle thinks just noticing this — once a day, for a week — gets you a deeper sense of how your brain works than most grown-ups have.

Lesson Check

1. Why does the Turtle compare your brain to a soccer team?
2. Where in your head is the thinking part? What does it do?
3. The Turtle says the feeling part is "fast — faster than the thinking part." What does that mean?
4. What is neurodiversity?
5. Pick one thing you did today and name two parts of your brain that worked on it.

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Lesson 1.2: How Your Brain Learns

Learning Objectives

By the end of this lesson, you will be able to:

• Define attention and tell why it matters for learning
• Tell the difference between short-term memory and long-term memory
• Explain how practice makes brain connections stronger
• Name three things that help your brain learn best
• Notice your own attention during a task

Key Terms

A Turtle Question

Have you ever tried to learn something new — like riding a bike, or doing a new math step, or playing a song on an instrument — and it felt impossible the first time?

And then, after a while, it became easier?

And then, after more practice, it became something you could do without even thinking?

Most kids have. Most adults have too. Even turtles have. (Yes, turtles learn things. Slowly, but really.)

That is your brain learning. The Turtle is going to tell you how it actually works.

The Connection Story From G3

At G3, I taught you about connections. Inside your brain, there are tiny pathways that link one part to another. When you learn something new, your brain builds a new connection. When you practice, that connection gets stronger. When you do something many times, the connection becomes so strong that you can do the thing without thinking — like tying your shoes.

That is true at G4 too. The Turtle is not going to take that idea back. But now I am going to add three more things that go with it.

Thing One: Attention

When you try to learn something new, the first thing that has to happen is attention.

Attention means your brain focuses on one thing. It pays attention. It tunes in. Instead of your brain jumping all over the place — what's that sound, oh look at that, I'm hungry, what's that on the wall — your brain settles on one thing and stays with it for a while.

Attention is the door to learning. Without attention, the new information does not really get into your brain. With attention, your brain has a chance to build a new connection [6, 7].

Here is an experiment you can try right now. Read this next sentence twice, while paying close attention. Elephants drink with their trunks, and one elephant can drink as much as 50 gallons of water a day.

Now look up from the page. What did you just read?

If you paid attention, you remember. If your mind wandered, you might not. That is attention at work.

The Turtle wants you to know two important things about attention.

1. Attention is a skill, not a fixed thing. People sometimes think "I have a short attention span" or "I have a long attention span" as if it cannot change. That is not quite right. Attention is something you can practice — like riding a bike or shooting a basketball. The more you practice paying attention on purpose, the better your brain gets at it [8].

2. Different brains have different attention. Some kids' brains find it easy to pay attention to one thing for a long time. Some kids' brains naturally want to take in lots of things at once. Kids with ADHD (the Turtle told you about this in Lesson 1) often have brains that work this way. Neither way is "wrong" — they are just different. Kids whose attention is harder often need different supports to learn well, and trusted grown-ups, teachers, doctors, and counselors help figure out what works.

When your brain is tired, hungry, or full of big feelings, attention is harder. (The Bear, the Elephant, the Cat, and I all agree — your body and your brain are connected. If your body is tired or hungry, your attention will struggle.)

Thing Two: Memory

Once your brain pays attention to something, the next step is memory.

Memory is what your brain holds onto from before — anywhere from a few seconds before to many years ago. The Turtle wants you to know that your brain actually has different kinds of memory.

Short-term memory holds onto things for a few seconds or minutes. When a friend tells you their phone number and you keep it in your head until you write it down — that is short-term memory. When your teacher says, "Take out your math book and turn to page 47" and you remember "page 47" until you get there — that is short-term memory. Short-term memory is like a small whiteboard your brain writes on for a little while, then erases [9].

Long-term memory holds onto things for much, much longer. Your friend's name. The way your kitchen looks. How to ride a bike. The words to your favorite song. What you did last summer. These are all stored in long-term memory. Some long-term memories last your whole life [10].

Here is the magic part: short-term memory turns into long-term memory through repeating and through sleep.

When you learn something new — say, a new word in school — it first goes into your short-term memory. If you only see the word once, by the next day it is probably gone. But if you see the word again, write it, say it out loud, use it in a sentence, and especially if you sleep on it — your brain takes the short-term memory and slowly builds it into a long-term memory.

The Cat (Coach Sleep) is the expert on the sleep part. The Cat told you in Your Sleep and You at G3 that sleep is when your brain saves what you learned that day. The Turtle agrees with the Cat completely. When you sleep, the parts of your brain that handle memory do their most important work. Kids who do not get enough sleep have a harder time learning the next day, not because their brain is dumber, but because last night's learning did not get fully saved [11].

Thing Three: Practice

The third part of brain learning is practice.

Practice means doing something on purpose, again and again, to get better at it. Practice is what turns a wobbly first try into a smooth final move.

Here is what happens inside your brain when you practice:

• First time: Your brain makes a brand-new connection. Wobbly. Faint. Kind of breaks easily. You do the thing poorly.
• Second time: That same connection fires again. Slightly stronger.
• Tenth time: The connection is well-worn. The brain knows the path.
• One-hundredth time: The connection is so strong that doing the thing feels easy.
• One-thousandth time: The connection is so strong that you do the thing without even thinking about it.

This is true for tying your shoes. This is true for adding numbers. This is true for playing piano. This is true for kicking a soccer ball. This is true for reading. This is true for being a kind friend (yes — being kind is something you practice too) [12].

The Turtle has three small rules about practice that I want you to remember.

Rule 1: Repeat to remember. If you want your brain to keep something, do it more than once. One time is not enough. Five times is much better. A short bit of practice every day, for many days, is even better than one long session.

Rule 2: Mistakes are part of learning. When you mess something up, your brain is actually doing useful work. It is figuring out what does not work, which helps it find what does work. Many of the best learners get lots of small things wrong on their way to getting the big thing right. Mistakes are not failures. Mistakes are practice.

Rule 3: Don't give up after one try. Trying something once and saying "I can't" is almost never accurate — your brain just has not built the connection yet. Try again. Try differently. Ask for help. Sleep on it. The brain you have today is not the brain you will have next month if you keep practicing.

Different Kids Learn Differently

The Turtle wants to say one more thing before this lesson ends.

Different kids learn best in different ways. Some examples:

• Some kids learn best by seeing — pictures, diagrams, videos, drawings.
• Some kids learn best by hearing — explanations, songs, podcasts, reading aloud.
• Some kids learn best by doing — moving their body, trying it out, hands-on practice.
• Some kids learn best by reading.
• Some kids learn best by talking it through with someone — asking questions, explaining it back.
• Most kids learn through a combination of all these.

If something is hard to learn one way, try a different way. The Turtle's advice for stuck learning: change the angle. Look at it from a different direction. Ask someone to explain it differently. Try it with your hands. Try it with your voice. Try drawing it. Different parts of your brain wake up to different kinds of learning, and any of them can help.

What Helps Your Brain Learn

The Turtle is going to bring everything together. At G3, I told you about four things that help your brain grow: sleep, real food, play, and curiosity. All four still help at G4. The Turtle wants to add a few more, now that you are older.

The G3 four (still true):

1. Sleep. Especially good sleep at night. (See the Cat at G3 and G4.) Memory consolidation happens during sleep.
2. Real food. Your brain is part of your body. Food becomes you, and food becomes brain too. (See the Bear at G3 and G4.)
3. Play and movement. Active bodies grow active brains. Moving brings more blood to the brain. (See the Lion at G3.)
4. Curiosity. Asking questions, wondering, being interested. Brains wake up when they are curious.

The G4 additions:

1. Attention. Paying attention on purpose — practicing focus.
2. Practice. Repeating things, slowly, again and again.
3. Mistakes. Letting yourself get things wrong as part of getting them right.
4. Sleep again. (The Turtle wants to mention it twice because it is that important.) When you sleep, your brain saves what you learned. No sleep, no saving.
5. Caring people. Friends, family, teachers, coaches, and other trusted grown-ups who help you learn. People matter to learning — humans learn better with other humans around.

The Turtle does not want to give you a list to memorize. The Turtle wants you to notice these things over time and pay attention to which ones are working in your life. Some kids do great with all of them. Some kids work on one or two at a time. The Turtle is patient with however your learning is going.

Practice One Small Thing This Week

Here is what the Turtle wants you to try.

Pick one small thing you would like to get a little better at this week. It can be anything — a math fact, a juggling trick, a song you are learning, drawing a kind of animal, writing in cursive, throwing a ball, anything. Just one small thing.

Each day this week, practice it for about five minutes. Just five. Pay close attention while you are practicing. Notice what is happening in your brain.

By the end of the week, your brain will have built — or strengthened — a real connection. The Turtle promises. This is one of the most reliable things in nature.

Lesson Check

1. What is attention? Is it the same for every kid?
2. What is the difference between short-term memory and long-term memory?
3. Why does the Turtle say "Sleep is when your brain saves what you learned"?
4. The Turtle has three rules about practice. Can you name one?
5. Name one of the G4 additions to "what helps your brain learn."

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Lesson 1.3: Your Brain and Complicated Feelings

Learning Objectives

By the end of this lesson, you will be able to:

• Tell that feelings can be layered or mixed
• Notice that some feelings come up about old things or memories
• Name three patterns that mean you should talk to a trusted grown-up
• Know what to do if a feeling sticks around for a long time
• Know what to do if a feeling ever feels really scary or unsafe

Key Terms

A Turtle Question

The Turtle has a question for you.

Have you ever felt happy and a little sad at the same time?

Maybe at the end of a really fun day — happy because the day was great, sad because it is ending. Maybe at a graduation or a goodbye — happy for what is happening, sad because something is changing. Maybe at your own birthday — happy that everyone is celebrating, a little nervous that everyone is looking at you.

If yes, you have felt mixed feelings. They are very real and very normal. The Turtle has felt them too.

At G3, I told you that all feelings are okay and that some feelings are small and easy while others are big or hard. That is still true at G4. The Turtle wants to add something new at G4: feelings can be complicated. They can be mixed. They can be layered. They can sneak up on you. They can come from places you do not expect.

This lesson is about that.

Feelings Can Be Mixed

At G3 I gave you a list of eighteen feelings. Remember? Happy, sad, scared, mad, excited, calm, worried, proud, surprised, lonely, tired, curious, bored, frustrated, loving, embarrassed, brave, shy.

What I did not say at G3 — because you were a little younger — is that you can have more than one of those feelings at the same time.

You can feel:

• Excited AND nervous (the first day of something new)
• Mad AND sad (when a friend hurts your feelings on purpose)
• Happy AND tired (after a really fun but long day)
• Proud AND embarrassed (when grown-ups make a big deal of something you did)
• Grateful AND scared (when something good is happening but might end)
• Curious AND worried (when you hear something new and you are not sure what it means)

This is called mixed feelings, and the Turtle thinks they are one of the most interesting things about being a person. Mixed feelings can be confusing — sometimes you do not know which feeling to listen to. That is okay. The Turtle's advice: when you have mixed feelings, you do not have to pick. You can just notice that you have both, name both, and let them both be there.

Feelings Can Come From Old Things

Here is another thing about feelings the Turtle wants to share.

Feelings can come up about things that happened a long time ago.

You might be doing your homework, perfectly fine — and then a smell or a song or a memory pops into your head. And suddenly you feel sad, or happy, or weird, and you do not know why. Then you realize: oh, that song was playing the day my grandpa died. Or, oh, this smell reminds me of my old school before we moved. Or, oh, this is what we ate at my last birthday before my sister got sick.

Memories and feelings are connected in your brain. The memory part and the feeling part live near each other and they talk constantly [13]. A memory can bring up feelings — sometimes big ones — even when nothing in your day right now is upsetting.

The Turtle wants you to know: this is normal. It does not mean anything is wrong with you. It means your brain is doing what brains do — connecting things, remembering things, feeling things.

When old-memory feelings come up, the Turtle's advice is the same as G3: notice the feeling, name it (sad? happy? mixed?), and if it is a big or hard feeling, tell a trusted grown-up.

Feelings Can Confuse You

Sometimes, even more confusingly, you have a feeling and you do not know why.

You wake up feeling worried, but nothing scary is happening today.

You feel grumpy at lunch, but the food is fine and your friends are nice.

You feel like crying after school, but the day was actually pretty good.

This happens to everyone. Brains are complicated. Feelings can come from things you ate or did not eat, from how you slept, from a worry that is just below the surface, from a memory you did not consciously think of, from your body changing as you grow, from many things at once. Most of the time, the feeling will pass on its own in a few hours or by the next day.

But sometimes feelings stick around. And that is when the Turtle wants you to pay close attention.

Patterns to Tell a Trusted Grown-Up About

The Turtle is going to be honest with you here because you are nine or ten now and ready.

At your age, some kids start having harder feelings than they used to. This is partly because brains are growing and changing. It is partly because life gets a little more complicated — school is harder, friendships are more complex, the world feels bigger. It is partly because of things that come from outside, like things on phones and TVs, things that happen at school, big family stuff.

If any of these patterns are happening to you, please tell a trusted grown-up. Right then. Not later.

• A worry that keeps coming back — especially the same worry, over and over, especially at bedtime or in the morning
• Sadness that does not lift in a few days — sad days happen, but if sadness sticks around for more than a few days in a row, that is worth telling a grown-up about
• Feeling alone even when you are with people — kids sometimes feel separate from others; if this is happening a lot, tell a grown-up
• Trouble sleeping that does not get better (see the Cat's chapters)
• Trouble eating that does not get better (see the Bear's chapters)
• Body aches that come with feelings — stomach aches before school, headaches when stressed, throat hurting when worried; the body and the brain are connected, and body aches can be a way feelings show up
• Wanting to hide from friends, family, or things you used to like
• Feeling like you are "too much" or "not enough" or "wrong" — these thoughts are not true, but if they keep showing up, a grown-up needs to know
• A friend or sibling showing any of these patterns — you can tell a grown-up about someone else, too

These are not things you have to figure out alone. They are not things you should handle on your own. At G3 I told you: kids do not handle big or hard feelings alone. That rule does not change. It gets even more important as you grow.

Why "Trusted Grown-Up" Matters

You learned this term at G3 from me, the Bear, the Cat, the Lion, the Penguin, the Camel, the Dolphin, the Rooster, and the Elephant. By the time you reached the end of G3, all nine of us had said it: kids do not handle big things alone.

At G4, the Turtle is going to say it again, slightly differently.

A trusted grown-up is a grown-up who:

• Takes care of you
• Knows you
• Loves you
• Wants what is good for you
• Listens when you talk
• Helps when something is hard

For most kids, trusted grown-ups include:

• A parent, step-parent, or guardian
• A grandparent
• A foster parent or caregiver
• An aunt, uncle, or older family member
• A teacher you trust
• A school counselor
• A school nurse
• Your doctor or pediatrician
• A coach (sports, music, or other) you trust
• A religious leader your family knows, if your family has one

If you have at least one trusted grown-up, you are not alone with your feelings. Even one is enough. Many kids have more than one, and that is great too.

Take a slow moment right now. In your head, name two trusted grown-ups you could tell about a big or hard feeling. Just think of their names. Knowing who they are is the first step.

When a Feeling Feels Really Scary or Unsafe

The Turtle is going to be careful here.

Sometimes — at any age, but especially as kids get older — a feeling can get so big or so dark that it does not feel safe. Maybe a feeling tells you that you do not want to be here. Maybe a feeling makes you want to hurt yourself. Maybe a feeling feels like a storm inside that you cannot make stop.

If a feeling like that ever comes up — tell a trusted grown-up right away. Not later. Right then. Even if it is late at night. Even if you think they will be upset. They will not be upset. They will be glad you told them. Telling a trusted grown-up about a really scary feeling is one of the strongest things a kid can do.

If you cannot reach a trusted grown-up in your house, here are special phone numbers grown-ups can use when feelings get really scary or unsafe. The Turtle wants you to know they exist. You do not have to remember the numbers — the grown-ups in your life can use them.

• The 988 Suicide and Crisis Lifeline: a grown-up can call or text 988, any time of day or night. Real people answer. They help right away.
• Crisis Text Line: a grown-up can text HOME to 741741, any time of day or night. Real people answer by text.
• SAMHSA National Helpline: 1-800-662-4357, day or night, for any kind of big worry.
• National Alliance for Eating Disorders: 866-662-1235, weekdays. The Bear told you about this one in How Food Becomes You — it is for grown-ups when worries are about food, eating, or how a kid feels about their body.

These helpers are for grown-ups to use when you and they need them. Kids your age do not call helplines on their own. You tell a trusted grown-up first. The grown-up takes care of the rest.

The Turtle is in your corner. So are all the other Coaches. So are the trusted grown-ups in your life. So are the kind people on the other end of these phone lines. You are not alone with your feelings. Not now, not ever.

Your Brain Is Beautiful

The Turtle will end this chapter with a thought.

Your brain is one of the most beautiful things in the universe. It thinks. It feels. It remembers. It learns. It changes. It connects with other brains. It carries you through your whole life. It is doing all of that right now, while you read this sentence.

Take care of it. Be patient with it. Be kind to it. Be curious about it. Tell trusted grown-ups when it feels heavy.

The Turtle will see you again at Grade 5. There is more to learn then. For now, this is enough.

The Turtle is patient. Take a slow breath. The Turtle is glad you came back.

Lesson Check

1. Give one example of mixed feelings.
2. Why does the Turtle say feelings can come from old memories?
3. Name two patterns the Turtle says you should tell a trusted grown-up about.
4. Who is one trusted grown-up you could tell about a hard feeling?
5. If a feeling ever feels really scary or unsafe, what is the FIRST thing you should do?

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End-of-Chapter Activity: A Week of Brain Practice

The Turtle has one activity for you. This one is a small project — a little each day, across one week. You can start any day.

What You Need

• A piece of paper or a small notebook
• A pencil
• One small thing you want to get better at
• About 5-10 minutes a day, for a week
• A trusted grown-up to share with at the end

What You Do

Step 1 — Pick your thing (Day 1). Choose one small skill or fact you would like to get better at this week. It must be small enough to practice in five minutes a day. Examples:

• A new word in another language
• A few measures of a song
• Drawing a kind of animal
• A math fact you keep getting wrong
• Tying your shoes a new way
• A juggling trick
• Cursive writing of your name
• Shooting a basketball with one hand
• Folding a paper crane
• Saying hello and your name in a new language

Write it at the top of your paper: My brain practice this week: ______.

Step 2 — Practice (Days 2-6). Each day for five days, spend about 5-10 minutes practicing your thing. Pay close attention. Notice what your brain is doing. Notice what feels easier each day. Notice when it feels stuck.

After each practice, write one short note on your paper:

• Day 1: New. Wobbly. Felt frustrating.
• Day 2: Slightly better. Made fewer mistakes.
• Day 3: Stuck. Wanted to quit. Kept going.
• Day 4: Sudden improvement! Surprised myself.
• Day 5: Feels easier. Ready to try harder version.

Just a sentence or two each day. Your notes can be anything you want.

Step 3 — Notice your sleep (Days 2-6). Each morning, ask yourself: how did I sleep last night? Make a small note next to that day's practice. Did good sleep help? Did bad sleep make practice harder? The Cat and I are watching together.

Step 4 — End-of-week reflection (Day 7). On the last day, look back over your notes. Write one short paragraph (3-5 sentences) about what you noticed:

• Did practice make the skill easier?
• When was the hardest moment? When was the breakthrough?
• What does your brain feel like now compared to Day 1?
• Will you keep practicing this thing? Or pick a new thing?

Step 5 — Share with a trusted grown-up. Show your week of notes to a trusted grown-up. Tell them what you noticed. Ask them: What is something you are trying to get better at? (Grown-ups practice too.)

Step 6 — Keep your paper. Save it. The Turtle thinks brain-practice notes are interesting to look back on. Some kids start a notebook of weekly practices and watch their brains grow over time.

What You Will Get From This

You will see — with your own eyes — your brain growing a new connection across one week. You will feel the truth of the Turtle's three rules of practice (repeat to remember, mistakes are part of learning, do not give up). You will learn what helps you focus and what gets in the way. And you will share a small new noticing with a grown-up who loves you.

That is a small habit. It is also a big skill. The Turtle thinks both are true.

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Vocabulary Review

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Chapter Review

These questions are not a test. They are a way to check what you remember. Take your time. Look back at the lessons if you need to. There are no tricks.

1. Name four parts of your brain by their job (the way the Turtle named them at G4).

2. What is neurodiversity? Why does the Turtle say different brains are good for the world?

3. What is the difference between short-term memory and long-term memory?

4. Name two of the Turtle's three rules about practice.

5. What does the Turtle mean by mixed feelings?

6. If a feeling sticks around for many days, or feels really scary, what should you do?

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Instructor's Guide

This guide is for parents, caregivers, teachers, and other grown-ups using this chapter with a child in Grade 4 (ages 9-10).

What This Chapter Teaches

This chapter is the second chapter in Coach Brain (the Turtle)'s K-12 spiral and the second chapter of the Grade 4 cycle. It builds directly on the Grade 3 chapter Your Brain and You. The chapter teaches three big ideas at age-appropriate Grade 4 depth:

1. Your brain works like a team. Different parts of the brain handle different jobs — thinking, feeling, memory, moving, sensing — and they pass information back and forth constantly. At Grade 4 these parts are named by job (the thinking part, the feeling part, the memory part) rather than by anatomical name. The anatomical names (prefrontal cortex, amygdala, hippocampus) wait for Grade 6. Neurodiversity is named explicitly and inclusively — autism, ADHD, dyslexia, and sensory differences are introduced as real ways brains work, all normalized.

2. How your brain learns. Three new concepts are introduced at G4 depth: attention (focus as a brain skill that can be practiced), memory (with simple short-term vs long-term distinction), and practice (repetition strengthens connections). The G3 four supports for brain learning (sleep, real food, play and movement, curiosity) carry forward, plus G4 additions: attention, practice, mistakes-as-part-of-learning, sleep mentioned twice for emphasis, and caring people.

3. Your brain and complicated feelings. This is the safety-critical lesson, with mental-health vigilance heightened from Grade 3 because ages 9-10 are entering the developmental window where anxiety, depression, and other mental health patterns can begin presenting more clearly. The chapter introduces mixed feelings (two or more feelings at once), the idea that feelings can come from old memories, and the experience of feelings that come up without obvious cause. Patterns that warrant a conversation with a trusted grown-up are named explicitly without clinical diagnostic labels: worry that keeps coming back, sadness that does not lift, feeling alone even with others, trouble sleeping or eating, body aches with worries, wanting to hide, feeling "too much" or "not enough." Crisis resources are introduced at age-appropriate framing.

What This Chapter Does NOT Teach

This chapter is intentionally light on content that becomes appropriate at later grades:

• No anatomical brain region names. Prefrontal cortex, amygdala, hippocampus, cerebellum, cerebral cortex — none are named at Grade 4. Parts are named by job only. Anatomical naming arrives at Grade 6.
• No neuron counts (86 billion neurons, 7,000 connections per neuron, etc.). Arrives at Grade 6.
• No clinical diagnostic vocabulary as conditions. Anxiety disorder, depression, ADHD, and autism are introduced as ways brains work — the chapter explicitly normalizes them without medicalizing them. Diagnostic depth is for clinical conversations between families and healthcare providers, not for a Grade 4 chapter.
• No detailed synaptic biology (neurotransmitters by name, synaptic pruning math, neuroplasticity vocabulary beyond "connection"). Arrives at Grade 6.
• No prescriptive mental health practices (meditation protocols, specific breathing techniques as prescriptions, etc.). The chapter teaches noticing and routing to trusted grown-ups.
• No detailed cognitive science terminology (executive function, working memory by name, etc.). The G4 vocabulary stays accessible.

If your child asks questions in these areas, the best answer is: "That is a great question. Let's figure it out together." Then you, the trusted grown-up, decide what to share.

How to Support the Child

A few things you can do that align with the chapter's framing:

• Notice your child's attention. When they are deeply focused on something they love (reading, drawing, building, playing), let it run. Sustained attention is hard to build if it gets interrupted constantly. Protected focus is a gift.
• Be patient with practice. When your child is learning something new, expect a wobbly start. Frustration is part of learning. Saying "I can see your brain working on this" is more helpful than "you're so smart" or "this should be easy."
• Talk about your own mistakes. Children at ages 9-10 are watching adults closely. When you mess something up, narrate it lightly: "I forgot the email — let me try again. Mistakes happen." This is one of the most powerful things you can teach about learning.
• Sleep is brain work. When your child has a hard test or a new skill they are learning, protect their sleep that night. The chapter teaches this; living it at home reinforces it.
• Be available for feelings. The chapter explicitly invites your child to tell a trusted grown-up about hard feelings. Make sure they know you are listening, that you will respond calmly, and that they will not be in trouble for sharing.
• Watch for the patterns named in Lesson 3. Many of these patterns can be the early presentation of anxiety or depression in children. None of them are clinically diagnostic on their own — but if you notice several at once, or one that persists, please contact your pediatrician.

Watching for Warning Signs

Children at ages 9-10 are entering the developmental window where anxiety and depression can begin presenting more clearly. The chapter is preventive. If you notice any of the following for more than two to three weeks, please contact your pediatrician or a qualified clinician:

• Persistent sadness or irritability
• Loss of interest in activities the child used to love
• Sleep changes — much more or much less than usual
• Eating changes — much more or much less than usual
• Body complaints without clear medical cause (frequent stomachaches before school, headaches with stress)
• Withdrawal from friends, family, or activities
• Excessive worry, fear, or clinginess
• Frequent thoughts of being "wrong" or "too much" or "not enough"
• Any mention of not wanting to be here, wanting to hurt themselves, or feeling hopeless — these require immediate response

Verified resources (May 2026):

• 988 Suicide and Crisis Lifeline: call or text 988, 24/7. The right first call for any mention of suicide or self-harm.
• Crisis Text Line: text HOME to 741741, 24/7.
• SAMHSA National Helpline: 1-800-662-4357, 24/7. General mental health and substance use referrals.
• National Alliance for Eating Disorders: 866-662-1235, weekdays. Licensed therapists. Particularly relevant if mood concerns appear alongside eating or body-image concerns.
• Your pediatrician is the best starting place for any persistent mental-health concern.

Note: the NEDA helpline (1-800-931-2237) is not functional as of this writing. Use the National Alliance for Eating Disorders number above instead.

Pacing

If you are using this chapter in a classroom:

If you are using this chapter at home, two lessons per week is comfortable. The end-of-chapter activity is a week-long project. Lesson 3 may benefit from being read alongside a trusted grown-up rather than alone — both because the heightened mental-health content matters and because it explicitly invites a family conversation.

Lesson Check Answers

Lesson 1.1:

1. Because different parts of your brain have different jobs, like different players on a soccer team. They work together, each doing their own job, and the team functions because everyone is doing their part. 2. The thinking part is at the front of the brain, behind the forehead. It plans, decides, and helps you pause before acting. 3. The feeling part can react faster than the thinking part can figure things out — so sometimes you feel something before you understand why (like jumping back when a dog barks suddenly). 4. Neurodiversity is the idea that brains naturally come in lots of different kinds, and that is good for the world. Autism, ADHD, dyslexia, and sensory differences are all examples of ways brains work. 5. Child's own answer.

Lesson 1.2:

1. Attention is when your brain focuses on one thing instead of jumping around. No — different kids have different attention. Attention can also be practiced like any skill. 2. Short-term memory lasts a few seconds to minutes (like a phone number you just heard). Long-term memory lasts a long time, sometimes your whole life (like your friend's name or the words to your favorite song). 3. Because while you sleep, your brain takes what you learned during the day and saves it into long-term memory. The Cat told you the same thing in Your Sleep and You. 4. Any one of: repeat to remember, mistakes are part of learning, do not give up after one try. 5. Any one of: attention, practice, mistakes-as-part-of-learning, sleep, caring people.

Lesson 1.3:

1. Any example of two feelings at once — happy and nervous, excited and scared, sad and grateful, etc. Child's own example is fine. 2. Because the memory part and the feeling part live close to each other and talk constantly. A memory can bring up a feeling, even when nothing in the present moment is upsetting. 3. Any two of: worry that keeps coming back, sadness that does not lift, feeling alone even with people, trouble sleeping or eating, body aches with worries, wanting to hide, feeling too-much/not-enough/wrong. 4. Any real grown-up in the child's life who cares for them. 5. Tell a trusted grown-up right away. The grown-up can call 988 or another helpline if needed.

Chapter Review Answers

1. Any four from Lesson 1.1: thinking part, feeling part, memory part, moving part, sensing parts (seeing, hearing, etc.). 2. The idea that brains naturally come in lots of different kinds. The Turtle says different brains are good because they bring different strengths — kids who notice details, kids with lots of energy and ideas, kids who think in pictures or words, kids who feel things deeply. Different brains together make a richer world. 3. Short-term memory holds things for a few seconds to minutes. Long-term memory holds things for a long time. Short-term turns into long-term through repeating and through sleep. 4. Any two of the three rules from Lesson 1.2. 5. Two or more feelings at the same time — like happy AND nervous, or sad AND grateful. 6. Tell a trusted grown-up. The grown-up can call a doctor or a helpline like 988 if needed.

Discussion Prompts

Open-ended questions to ask the child after the chapter:

1. Which part of your brain do you think you use the most? Why?
2. Can you think of a time you felt mixed feelings? What were they?
3. What is something you got better at by practicing this year? What was it like before? What was it like at the end?
4. Have you ever had a memory come up that gave you a feeling? Can you tell that story?
5. The Turtle says different brains are good for the world. What is something your brain is especially good at?
6. Who is one trusted grown-up you would go to if a feeling stuck around for days?
7. What is the most surprising thing you learned about how your brain learns?
8. The Turtle reminds you that "you are not alone with your feelings." What does that mean to you?

Common Child Questions

• "Why do I keep getting the same worry over and over?" Sometimes the same worry shows up because your brain is trying to work through it. If a worry keeps coming back even after you have thought about it, tell a trusted grown-up. They can help your brain find a way to settle the worry.
• "Is having ADHD or autism bad?" No. ADHD and autism are ways brains work — they are different, not bad. Kids and adults with these brains are part of every community in the world. They have strengths the rest of us depend on. They sometimes also need supports, and trusted grown-ups help with those.
• "Why am I sad for no reason?" Sometimes feelings come up without an obvious reason — maybe from how you slept, how you ate, a memory below the surface, or many small things. Most of the time the feeling will pass. If it sticks around for many days, tell a trusted grown-up.
• "Can I make my brain better?" Yes — but not overnight. Sleep, real food, play, attention, practice, mistakes, and caring people all build your brain over time. The Turtle thinks of "better" as "more connected" — the more connections you build, the more your brain can do.
• "Why does my friend learn faster than I do?" Different kids learn at different paces. Some kids learn fast at one thing and slow at another. Your friend may be faster than you at math and slower than you at something else. Different is not better or worse. Keep practicing your own way.
• "Why is it so hard to pay attention sometimes?" Many reasons. Tired brains have less attention. Hungry brains have less attention. Brains with big feelings have less attention. Some kids' brains naturally have lots of attention-pulling thoughts (and that is ADHD). If attention is often hard, tell a trusted grown-up.
• "Why do I have nightmares about things that happened a long time ago?" Your brain is still working on those memories. Big things can take a long time to settle. If nightmares are happening a lot or scaring you, tell a trusted grown-up.
• "What if I don't have a trusted grown-up?" Every kid deserves at least one. If you do not feel like you have one at home, look elsewhere — a teacher, a counselor, a school nurse, a doctor, a coach, a religious leader, a neighbor. There are also helplines like 988 and Crisis Text Line (HOME to 741741) — grown-ups answer there too, even if they are not in your family. You are never truly alone.

Parent Communication Template

Dear families,

Your child is beginning Chapter 1 of the Grade 4 CryoCove Library Coach Brain curriculum — How Your Brain Works. This is the second chapter in Coach Brain (the Turtle)'s K-12 spiral, building on the Grade 3 chapter Your Brain and You.

What the chapter covers:

• That the brain works like a team, with different parts doing different jobs (thinking, feeling, memory, moving, sensing) — taught at G4 by job, not yet by anatomical name
• How brains learn: through attention, memory (short-term and long-term), practice, and sleep
• That every brain is different, including kids with autism, ADHD, dyslexia, and sensory differences — neurodiversity introduced inclusively
• That feelings can be complicated — mixed feelings, feelings from old memories, feelings without obvious cause
• Patterns that should be talked about with a trusted grown-up — without using clinical diagnostic labels, but watching for the early signals of anxiety or depression that can begin emerging at ages 9-10

Tone: The chapter is patient, methodical, and consistently inclusive. The Turtle never compares one child's brain to another, never frames difference as deficit, and never moralizes about how anyone learns or feels. The "we have met before" opening acknowledges that your child has been working with the Turtle since Grade 3 and is now ready for a slightly deeper conversation.

What this chapter does not teach: anatomical brain region names (those arrive at Grade 6), neuron counts, clinical mental-health diagnostic vocabulary as conditions (the chapter normalizes neurodiverse experiences without medicalizing them), prescriptive mental-health practices, or detailed cognitive science terminology.

End-of-chapter activity: Your child will spend a week on a small brain-practice project — picking one small skill, practicing 5-10 minutes daily, noticing their brain making connections, and sharing with a trusted grown-up at the end. Please support this. The lived experience of practice strengthening a connection is one of the chapter's most important takeaways.

A note on Lesson 3: Lesson 3 covers complicated feelings and explicitly names patterns that should be discussed with a trusted grown-up — without using clinical diagnostic labels. Ages 9-10 are entering the developmental window where anxiety, depression, and other mental health patterns can begin presenting more clearly. The chapter handles this preventively and routes any persistent or concerning patterns to trusted grown-ups, with crisis resources (988, Crisis Text Line — text HOME to 741741, SAMHSA, National Alliance for Eating Disorders) introduced at age-appropriate "grown-ups can call these if you need help" framing. If you would like to read Lesson 3 alongside your child, that is welcome.

Warning signs we ask families to notice: persistent sadness or irritability, loss of interest in former favorites, sleep or eating changes, body complaints without medical cause, withdrawal, excessive worry, thoughts of being "wrong" or "too much," and any mention of not wanting to be here. If you notice any of these for more than two to three weeks, please contact your pediatrician. Verified resources are listed in the Instructor's Guide section of the chapter.

If you have any questions, please reach out to your child's teacher or to us at the CryoCove team.

Warmly, The CryoCove Curriculum Team

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Illustration Briefs

Lesson 1.1 — The Brain Team Placement: After "The Turtle Story." Scene: A simple cutaway side-view of a child's head with five soft-colored regions labeled by job, not by anatomy. Front of the brain (behind the forehead): a soft yellow region labeled "Thinking part — plans and decides." Deep in the middle: two small regions colored coral, one labeled "Feeling part — makes feelings" and one labeled "Memory part — holds memories." Top of the brain: a band labeled "Moving part — tells muscles what to do." Back of the brain: a small region labeled "Seeing part — works with your eyes." All regions are soft, friendly shapes — no medical detail, no anatomical realism. Coach Brain (the Turtle) stands beside the diagram with one flipper raised in a friendly explainer pose. Mood: clear, warm, curious, never clinical. Show diverse skin tones throughout the chapter's illustrations. Aspect ratio: 16:9 web, 4:3 print.

Lesson 1.2 — Practice Strengthens Connections Placement: After "Thing Three: Practice." Scene: A simple before-and-after illustration of the same brain region. Left panel: "First try" — a few faint dotted lines between brain cells (drawn as soft round shapes, not medical-detail neurons). Right panel: "After a week of practice" — the same cells with thicker, brighter lines between them. An arrow between the panels labeled "Practice = stronger connections." A child sits beside both panels, smiling in the right panel, looking thoughtful in the left. Coach Brain (the Turtle) stands nearby with a calm, proud expression. Mood: hopeful, clear, encouraging, never about competition. Aspect ratio: 16:9 web, 4:3 print.

Lesson 1.3 — When Feelings Stick Around Placement: After "Patterns to Tell a Trusted Grown-Up About." Scene: A simple, warm scene of a child sitting on a bed or in a quiet corner, knees pulled up, looking a little far away. A trusted grown-up sits nearby — not too close, not too far — leaning in slightly, with a kind, patient face. The grown-up's hands are visible and open. No phone, no distractions. A soft window-light. Coach Brain (the Turtle) sits at the edge of the scene, peaceful, present. Small text near the picture reads: "When feelings stick around, telling a trusted grown-up is one of the strongest things you can do." Mood: safe, warm, never sad-stereotype, never bleak. Show diverse skin tones throughout the chapter. Aspect ratio: 16:9 web, 4:3 print.

Optional — Lesson 1.1: Different Brains, Same World Placement: After "Every Brain Is a Little Different." Scene: A wide, gentle scene of five kids doing different activities side by side: one kid building an elaborate tower with focus and detail; one kid bouncing with lots of energy and ideas; one kid reading with concentration; one kid sketching from imagination; one kid wearing noise-reducing headphones while quietly drawing. Each kid has a slightly different "thought cloud" above them — pictures, words, shapes, music notes, structures. All kids are absorbed in their thing. The setting is a classroom or library — soft, welcoming, not chaotic. Coach Brain (the Turtle) stands at the edge of the scene, smiling, looking proud. Above, soft text reads: "Different brains. Same world. All needed." Mood: inclusive, ordinary, celebratory of variety. Show diverse skin tones, body types, and family compositions across the chapter. Aspect ratio: 16:9 web, 4:3 print.

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Citations

1. Giedd, J. N. (2008). The teen brain: insights from neuroimaging. Journal of Adolescent Health, 42(4), 335-343.

2. LeDoux, J. E. (2003). The emotional brain, fear, and the amygdala. Cellular and Molecular Neurobiology, 23(4-5), 727-738.

3. Kandel, E. R., Schwartz, J. H., Jessell, T. M., Siegelbaum, S. A., & Hudspeth, A. J. (2013). Principles of Neural Science (5th ed.). McGraw-Hill. (Foundational neuroscience reference; G4 content stays at recognition depth.)

4. Armstrong, T. (2010). Neurodiversity: Discovering the Extraordinary Gifts of Autism, ADHD, Dyslexia, and Other Brain Differences. Da Capo Lifelong Books.

5. American Academy of Pediatrics, Council on Children with Disabilities and Section on Developmental and Behavioral Pediatrics. (2020). Identification, evaluation, and management of children with autism spectrum disorder. Pediatrics, 145(1), e20193447.

6. Posner, M. I., & Petersen, S. E. (1990). The attention system of the human brain. Annual Review of Neuroscience, 13, 25-42.

7. Diamond, A. (2013). Executive functions. Annual Review of Psychology, 64, 135-168.

8. Posner, M. I., & Rothbart, M. K. (2007). Research on attention networks as a model for the integration of psychological science. Annual Review of Psychology, 58, 1-23.

9. Baddeley, A. (2003). Working memory: looking back and looking forward. Nature Reviews Neuroscience, 4(10), 829-839.

10. Squire, L. R., & Wixted, J. T. (2011). The cognitive neuroscience of human memory since H.M. Annual Review of Neuroscience, 34, 259-288.

11. Walker, M. P., & Stickgold, R. (2006). Sleep, memory, and plasticity. Annual Review of Psychology, 57, 139-166.

12. Draganski, B., Gaser, C., Busch, V., Schuierer, G., Bogdahn, U., & May, A. (2004). Neuroplasticity: changes in grey matter induced by training. Nature, 427(6972), 311-312.

13. Phelps, E. A. (2004). Human emotion and memory: interactions of the amygdala and hippocampal complex. Current Opinion in Neurobiology, 14(2), 198-202.

14. American Academy of Pediatrics, Committee on Psychosocial Aspects of Child and Family Health. (2019). Promoting healthy emotional and behavioral development in young children: a clinical report. Pediatrics, 144(1), e20191767.