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

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

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

In this activity, learners discover a brain process called habituation.

In this activity, learners play a trick on their own brain to see if the brain can learn to ignore distracting input. Colors and words are used to play the visual trick, known as a Stroop Test.

In this activity (3rd activity on the page), learners taste test different foods and categorize them as sweet, bitter, sour, or salty. Learners compare their results with the group.

In this activity, learners explore reaction time and challenge themselves to improve their coordination. Do you want to move faster? Catch that ball that you never seem to see in time?

In this activity, learners explore how their depth perception would be affected if they only had one eye. Learners work in pairs and attempt to drop a penny in a cup with one eye covered.

In this easy demonstration (3rd on the page), learners explore depth perception by conducting a test with two pencils.

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

In this quick activity/demonstration (5th on the page), learners explore depth perception.

In this activity, learners make an optical illusion toy from the 1800s to explore persistence of vision.

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

During this activity, learners take part in a variety of tasks which involve moving and balancing different body parts.

In this activity (2nd activity on the page), learners explore the sensitivity of their sense of touch.