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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.

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

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

In this activity, learners explore the great pump in their chests--the human heart!