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Create 3D glasses and use them to explore color, light and optics. Fool your brain into 'seeing' three dimensions on a flat surface!

In this activity, learners conduct a simple test to find their blind spot.

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.

In this activity, learners will make a thaumatrope, an old-fashioned optical illusion that dates back to the 1820s.

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

This activity is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Learners look through two cups with small holes in them to simulate what it'

In this activity, learners make a stroboscope--a spinning disk with slits around the edge that you look through.

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.

During this hands-on activity, learners are briefly exposed to moviemaking and animation, when they create their own thaumatropes.

In this activity (16th on the page), learners play a variation of the "I Spy" game to explore color. Learners work in teams with each team assigned a color.

In this activity (13th on the page), learners complete a simple illusion trick to see through their own hand.

In this optics activity, learners build an animation tool to make mini movies. When you spin a phenakistascope, the pictures move so quickly that your eyes and brain can't separate the images.

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 optics activity, learners conduct an experiment to explore peripheral vision. Learners collect data about their ability to see shapes, colors, or letters using their peripheral vision.

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

Which one of your eyes are dominant? Do they act independently or are they equally "in control?" This activity explores how your eyes work (or don't work) together.

In this activity (1st on the page), learners find their blind spot--the area on the retina without receptors that respond to light.

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

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.