Playing is fun. When we move, we use our bones and muscles. Bones and muscles help us play.We throw with our hands. Our hands have got lots of bones. One hand has got ____ bones. We kick with our feet. Our feet have got lots of bones, too. One foot has got ____ bones. When we throw a ball, we use ____ muscles. When we kick a ball, we use ____ muscles. When we jump, we use more than ____ muscles. We need to take good care of our bones and muscles.

BE 2 Unit 2 Science 1

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