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In this activity, learners use an old CD to construct a spectroscope, a device that separates light into its component colors.

In this activity about light and perception, learners create pictures in thin air.

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 two-part activity, learners explore the properties of liquid crystals, which are responsible for why mood rings change color.

In this activity, learners explore how polarizing sunglasses can help diminish road glare.

In this activity, learners use the Sun's energy to cook marshmallows. Learners construct the solar oven out of simple everyday materials.