Page 21 - 新思维科学学生用书6 样章

1 The human body

1.2 The respiratory system

We are going to:

• describe how the respiratory system works
• make and explain a model of breathing

• show that breathing involves two different stages: breathing in and breathing out
• measure breathing rate

• do practical work safely

• record results in a table
• draw a line graph of results

• use results to make a conclusion
• find information to answer a scientific question.

Getting started

1 Draw a picture of the lungs.

2 Tell a partner the following:
• why you drew the lungs that way

• what happens to the lungs

when we breathe in and out.

breathing
breathing rate

diaphragm
lungs
windpipe

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