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In this activity, learners investigate circulation and measure their own your heartbeat. A heart rate, or pulse, is the number of times the heart beats per minute.

In this activity, learners investigate whether more people are squares or rectangles. People with similarly sized heights and arm spans are classified as squares.

In this Cyberchase activity, learners use math to explore how parts of the body are proportional.

In this activity, learners mark their height on a height chart and discover how tall they are in nanometers.

Our bodies defend themselves in many different ways to prevent us from getting sick.

Learners will explore the chemistry of mucous and its importance to our health by following a process to make their own replica "snot." The activity includes a time and age recommendation, a materials