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In this activity, learners make their own heat waves in an aquarium.

In this activity about light and refraction, learners make a lens and magnifying glass by filling a bowl with water.

In this hands-on botany activity, learners sprout vegetables in film canisters.

In this activity, learners use simple materials to create giant bubbles.

The Ancient Egyptians used a naturally-occurring salt from the banks of the Nile River, called natron, to mummify their dead.

In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.

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.