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This is an activity about lung capacity. Learners will measure their own lung capacity using a homemade spirometer.

Take the two-straw challenge and discover how pressure affects vacuums! In this activity, learners experiment with drinking through one and two straws, comparing the amount of liquid they can drink.

This lesson challenges groups of learners to design and construct a wind generator with the most electrical output.

In this activity, learners will build an air cannon out of simple materials you can find around the house. Although air is invisible to the eye, it is not by any means empty space!