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During this lesson, learners will determine their blood pressure and learn about systolic and diastolic pressures.

This is a demonstration you can use to show learners how valves and pumps work in concert to move blood through the circulatory system.

In this activity, learners take their own pulse and explore how heart rate is affected by various activities.

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

Learners will construct a model of a heart valve using a film canister, a piece of masking tape, and a piece of paper.

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.