HeartBeat.

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Presentation transcript:

HeartBeat

Part 1 In the sixth and seventh grade, you studied proportional relationships. Do you think that the number of heartbeats you can count is proportional to the number of seconds that you check your pulse? Explain why or why not.

Part 2 Work with your partner to take measurements and test your conjecture. One of you will be the timer and the other will count their own number of heartbeats per period of time (you may use cell phone)

Part 2 First, count and record the number of beats in 10 seconds, and repeat the experiment counting the number of beats in 20 seconds and 40 seconds. Predict how many times your heart would beat in 25 seconds, in 60 seconds, and in 120 seconds. Explain how you made your predictions.

Part 3