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In this activity, learners discover that the human brain is highly adaptable. Learners try to toss beanbags at a target while wearing prism goggles.

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

In this activity about light and reflection, learners discover that what you see is often affected by what you expect to see.

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

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

In this activity, learners investigate procedural memory.

In this optics activity, learners make a lens and explore how the eye manipulates the light that enters it.

In this demonstration (18th on the page), learners conduct a simple test to explore how the cornea refracts light, which is further bent by the eye lens through a process known as accommodation.

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 (12th on the page), learners investigate their ability to discriminate (see) different colors.

In this fun optics activity, learners explore principles of light, reflection (mirrors), and perception. Learners work in pairs and sit on opposite sides of a "two-way" mirror.

In this activity (17th on the page), learners investigate why you cannot see colors in dim light.

In this activity, learners make a Benham Top to explore visual illusions and optics.

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