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In this activity, learners explore sound by constructing an instrument toy that buzzes when you swing it.

In this activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH.

In this activity, learners build a musical drum using a cardboard tube, plastic wrap, and beads.

In this activity, learners build a slide whistle using PVC pipe, bamboo skewer, and piece of foam. Construction of the instrument is relatively simple.

Cool off in the heat with this project! Learners use simple materials to build a fan that runs on a motor.

In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).