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In this optics activity, learners explore how they can make gelatin stop light, but not stop them from seeing fruit suspended within.

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 activity, learners create a "mini sky" in a glass of water in a dark room.

This is a classic exercise for visualizing the scale of the Solar System.