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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 make a "light fountain" from a clear plastic bottle, flashlight, and other simple materials.

In this optics activity, learners use glass and water to demonstrate total internal reflection (TIR).

In this activity, learners make optical fibers out of strips of gelatin.

In this activity, learners use a laser pointer, empty soda bottle, rubber plug and water to demonstrate total internal reflection.