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In this activity, learners create a simple “top” from a CD, marble and bottle cap, and use it as a spinning platform for a variety of illusion-generating patterns.

In this activity, a lightbulb is placed in front of a concave mirror. The actual lightbulb is not visible to the viewer, but the viewer can see the mirror image of the lightbulb formed in space.

In this activity, learners investigate color vision as well as plan and conduct their own experiments.

In this activity, learners create a cylindrical mirror to see themselves as others see them.

In this activity, learners investigate the sense of sight and develop and conduct their own experiments.

In this activity about light and perception, learners create and observe moire patterns.