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In this activity, learners use a flashlight, a glass of water, and some milk to examine why the sky is blue and sunsets are red.

In this optics activity, learners explore diffraction by adding wax blocks to a ripple tank. The wedge-shaped blocks act as obstacles that the wave must bend around.

In this optics activity, learners explore interference by adding wax blocks to a ripple tank.

In this activity, learners create a straw oboe to explore sound and pitch.

In this activity, learners use gelatin as a lens to investigate the properties of laser light.