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In this activity, learners will experiment with water- and air-filled balloons as a way of dampening sound before it reaches their ears.

Make a one-string "guitar" by stringing a cup with some fishing line. You amplify the plucking of the string by placing a piezo contact microphone and mini battery powered amplifier inside the cup.

In this sunny day experiment, learners measure and compare how quickly light and dark colored materials absorb heat.