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In this activity, learners will measure their lung capacity by making their own spirometer. Learners will then explore factors that affect the amount of air the lungs can hold.

Most of the time, we don't have to think about breathing. In fact, you're probably breathing right now without thinking about it!

In this activity, learners will construct an air cannon as a model for the human ear.

Learners will build a lung model to understand how their lungs and diaphragm work to make them breathe.

In this activity, learners work in pairs to measure each other's ankles with lengths of string.