The skeleton is the framework that supports and protects the rest of the body. Without your skeleton you would be a rather unattractive heap on the floor! Bones are harder than concrete and longer lasting. They have to be tough and strong because they carry the weight of your body. It is your skeleton that determines how tall you are and there's nothing much you can do about that. Exercise and a good diet will help make your bones stronger but you can't really make them bigger.
This artwork shows the main bones of the skeleton. How many do you think there are? Did you know an adult human has 206 bones? See if you can answer these questions about bones and the skeleton.