Touch your toes.
Bend your knees.
Hold your nose.
Any way you move,
Your bones are helping out.
You have 206 bones in your body.
These bones fit together perfectly.
Together, they form your skeleton.
Your bones are hidden under your skin.
But you can feel them and see their shape.
Your bones start out small,
just the way you do.
As your bones grow,
You grow, too.
The smallest bones are inside your ears.
The biggest bones are in your legs.
Some of your bones act as armor.
A flat bone in the middle of your chest
Protects your heart.
Your ribs are a bony cage
for your lungs
and other squishy parts.
The bones of your face
are part of your skull.
It covers your brain like a helmet.
Some people think skulls look scary.
They like to wear skull masks on Halloween.
Pirates used a flag with a skull and
crossbones on it to frighten people.
Today, a skull and crossbones
means danger or poison.
When you see it, be careful!
Your bones do not bend.
So they are joined in places
where you need to bend.
These places are called joints.
Your spine, or backbone,
has many joints.
It helps you to stand up straight
or do a somersault.
Our bones work
with our muscles
to make our bodies move.
Bones are hard and strong.
But sometimes they break by accident.
Luckily, the broken parts can grow back together.
After many weeks, The bone is healed.
Some old bones turn into fossils
after millions of years.
Fossils tell us a lot about animals
that lived long ago –
such as dinosaurs!
Many animals have bones like ours.
But their skeletons match their shapes and sizes.
Toads and goldfish have
much smaller bones than we do.
Elephants and whales have
much bigger bones than we do.
Some animals have no bones at all.
Jellyfish and worms wriggle and
squiggle Without them.
If you had no bones,
you would look like a blob.
So when you run
or stretch or grab or chew,
think of your bones
and say, “Thank you!”