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Measuring Heartbeats

Measuring Heartbeats | Science Fair Projects | STEM Projects
Ever wonder how fast your heart beats? With this experiment, you can find out! Build your own stethoscope and use it to measure your own heartbeat. Then, see how it changes after exercise.


The hypothesis is that the heart rate increases after exercise.

Method & Materials

You will pair up with a partner, build a stethoscope, and measure each other's heartbeats. Then, one partner will exercise for one minute and you will measure the heart rate again.
You will need a cardboard tube from a paper towel roll for each pair of students.


After the experiment, it was observed that the heart rate increased after exercise. This shows that the heart rate increases to pump more blood to the working muscles.

Why do this project?

This science project is unique because it allows students to build their own stethoscope and measure their own heartbeats.

Also Consider

Experiment variations to consider include measuring the heart rate after different types of exercise, such as running, jumping, or dancing.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!
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