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Can gelatin (like Jell-O ®) change the speed of light?

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.

This activity generates learner excitement about light through the creation of a room-sized rainbow.

In this activity, learners explore light, color and rainbows by making their own rainbow glasses.

In this optics activity, learners explore why the sky is blue and the sunset is red, using a simple setup comprising a transparent plastic box, water, and powdered milk.