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

In this activity (page 2 of PDF), learners play with a lens and a piece of paper to focus an image on the paper. Learners look at different things, and see how the lenses affect the image.

Closing one eye eliminates one of the clues that your brain uses to judge depth. Trying to perform a simple task with one eye closed demonstrates how much you rely on your depth perception.

This activity (on pages 7-13) has pairs of learners survey an array of similarities and differences between them.

This science activity demonstrates the dominant eye phenomena. What does your brain do when it sees two images that conflict?

In this activity about light and perception, learners discover how a flash of light can create a lingering image called an "afterimage" on the retina of the eye.

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 make a Benham Top to explore visual illusions and optics.

In this activity about depth perception, learners create an optical illusion in a shoe box.

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 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.

If you had a long tube with a 5 millimeter wide slit, would you see the entire Golden Gate Bridge?

Create an illusion where it appears that your hand has a hole in it. You'll see the results from when one eye gets conflicting information.

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

This is a quick activity/demonstration that introduces learners to the concept of index of refraction. Learners place stirring rods in a jar of water and notice they can see them clearly.

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

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.