The students can practice counting the tabletop heartbeats, starting with three or four taps and working up to 15. Now it is time to locate and listen to human heartbeats. First, the students listen to each other's hearts. Allow enough time to be sure everyone can hear and identify the beat. The students will measure heart rates for a 15-second interval.
Students then switch roles and repeat.
Ask each pair to report their findings on their recording sheet. The partner then counts the heart rate for 15 seconds and records the result. Have the counter record the heart rate and then let the students switch roles. Comparing Results Upon completion of the exercise, let each pair report its results on a data table, drawn on the blackboard with columns for resting and active heart rates. All rights reserved.