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Pulse Gathering

Module by: Interactive Mathematics Program

Intent

This is the third activity in which students collect measurement data. In Pulse Analysis, they will analyze their collected data.

Mathematics

Students will continue to encounter measurement variation as they gather pulse rate data. Variations in pulse measurements will be due to error and to actual changes in pulse rate, which is not constant over time even for a single individual. The challenge in this situation, and in the unit problem, is to distinguish between real differences and differences due to measurement variation.

Progression

This is a data collection activity. Students will measure and record their own pulses and then record the measurements for at least two other students.

Approximate Time

25 minutes

Classroom Organization

Individuals, then groups

Materials

Clock with second hand or stopwatch

Doing the Activity

Have students read the activity. Ask them how to find their pulse, and make sure all of them can find their pulses on their own wrists or necks. If students have not commented on the importance of using a finger rather than the thumb, caution them that thumbs have a pulse of their own.

Discussing and Debriefing the Activity

Tell students they will be working with the data from this activity in Pulse Analysis. For that activity, they will need data from at least two other students, so they should record the data from the other members of their groups.

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