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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.

Many of the genetic sequences found in the fruit fly genome are similar to those found in humans.

Learners will build a homemade pump using a balloon, a mason jar, and some straws.

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.

In this activity (on pages 22-33), learners do the kind of work genetic scientists do, sorting and comparing (images of) genetic material strands called chromosomes.

By building a model of a lung and diaphragm, learners discover the function of various parts of the body's respiratory system.