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

In this trick, hold your hand over a burning candle without getting burned, by reflecting and transmitting the light of two candles. This activity is best suited as a demonstration.

Have you ever heard of a camera without a lens? In this activity, learners create a pinhole camera out of simple materials. They'll see the world in a whole new way: upside down and backwards!

In this hands-on activity, learners simulate the crashing and smashing of a meteor impact using household cooking supplies.