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In this online activity, learners measure their pulse rates and investigate how their pulses change when they engage in different activities.

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

In this activity on page 9 of the PDF, learners test how flavoring extracts move through the walls of a balloon.

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 online activity, learners role-play as medics, treating a patient with missing organs. Learners select different organs, then drag them into the proper location in the patient's body.