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In this activity, young learners use different-sized paper 'caterpillars' and various household items to predict and measure their height.

This activity (on pages 16-23) lets learners measure each other's vital signs—the signs that help doctors understand what's going on in a patient body.

In this environmental health activity, learners investigate their own vital lung capacities.

In this design challenge activity, learners build a machine out of cardboard that runs smoothly and dependably. Learners must be precise to make sure their component works properly.