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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, 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 construct a three-dimensional ambiguous cube to explore visual illusions and how our brains interpret or misinterpret information.

In this activity, learners construct a device that allows them to view 2-D images in 3-D.

In this optics/mathematics activity, learners use two hinged mirrors to create a kaleidoscope that shows multiple images of an object.

In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

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

This fun and simple hands-on astronomy activity lets learners explore the difference between telescope magnification and resolution.

In this activity, learners will perform various investigations to understand the vestibular-ocular reflex and learn about the importance of visual cues in maintaining balance.

In this activity, learners investigate visual perception as well as plan and conduct their own experiments.

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

In this activity (3rd on the page), learners conduct a series of tests to find out which of their eyes is more dominant.

In this artistic activity, learners blow up a smaller picture into a larger one, by using a grid.

In this quick and simple activity about reflexes (at the top of the webpage), learners conduct a simple test to explore pupillary response.