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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?

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

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 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.

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

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

In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.

How can you make one shade of gray look like two? By putting it against two different color backgrounds! This activity allows learners to perform this sleight of hand very easily.

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

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

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 make a Benham Top to explore visual illusions and optics.

In this activity, learners control the (apparent) size of a hole with their brain.

This activity (aka "snack") provides instructions for discovering your blind spot. It is an exploration of light and visual perception using simple materials you may have around the house.

This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.

In this activity related to light and perception, learners use a pinhole in an index card as a magnifying glass to help their eye focus on a nearby object.

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.

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