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# Middle School math: Proportionality and Rate of Change

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In this experiment, you will simulate a leaking faucet and collect data about the volume of water lost at 5-second intervals. You will then use the patterns in your results to predict how much water is wasted when a faucet leaks for one month.

Equipment: a paper cup, water, a sharp object (such as a paper clip), a clear measuring container, and a watch or clock with a second hand

As a class, we will conduct the experiment. Together, we need to do the following:
1. Use the sharp object to punch a small hole in the bottom of the cup. Cover the hole with your finger.
2. Fill the paper cup with water.
3. Hold the paper cup over the measuring container.
4. When you are ready to begin timing, uncover the hole so that the water drips into the measuring container.
5. In your table, record the amount of water in the measuring container at 5-second intervals, up to a total time of 60 seconds.
Example of questons:
1. If a faucet dripped into the measuring container at the same rate as your paper cup does, how long would it take for the container to overflow?

Total Pages
3 pages
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Teaching Duration
45 minutes
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