Page 13 - 新思维科学活动用书4 样章

1 Living things

4 Underline the word that makes each of the sentences true.

The muscle that is working contracts / relaxes.

The muscle that is resting contracts / relaxes.

Challenge

5 Amira and Jessie made a model to show how muscles work.
This is what their model looked like.

A

B
D

C

a Which part of the body does each part of the model represent?

A

B

C

D

b What happens to part C when you pull on part B?

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