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In this activity related to the famous "Stroop Effect," learners explore how words influence what we see and how the brain handles "mixed messages." Learners read colored words and are asked to say th

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

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 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.

Learners use two mirrors to explore how images of images of images can repeat forever.

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 (11th activity on the page), learners use pennies to test their hearing acuity.

This activity (8th activity on the page) tests learners' ability to identify things using only the sense of hearing.

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

In this activity, learners investigate the sense of hearing and plan and conduct their own experiments.

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.