Subject: Perception

Science activity that demonstrates the afterimage phenomenon
Afterimage
A flash of light prints a lingering image in your eye.
Science activity to construct a cube that can be perceived in two ways
Ambiguous Cube
Strange things can happen when your brain gets confused.
Anti-Gravity Mirror
Learn how to fly with this neat mirror trick.
Science activity that explores how yogurt is made
Bacteria Culture Club
Make yogurt from yogurt.
Science activity that demonstrates a color illusion
Benham's Disk
A rotating black-and-white disk produces the illusion of color.
Science activity demonstrating color afterimage phenomenon
Bird in a Cage
Stare at one color—but see another.
Science activity demonstrating the blind spot phenomenon
Blind Spot
To see or not to see.
Science activity demonstrating the phenomenon of light scattering
Blue Sky
Discover why the sky is blue and the sunset is red.
Science activity that demonstrates how some light sources flash on and off many times a second
Bronx-Cheer Bulb
Give a light source the raspberry and watch it wiggle—but the only thing wiggling is you.
Science activity investigating spectroscopy
CD Spectroscope
Make a truth teller for light.
Science activity demonstrating visual perception illusion
Cheshire Cat
Make a friend disappear, leaving only a smile behind.
Science activity that demonstrates the dominant eye phenomena
Circles or Ovals?
Your brain combines information from your eyes in surprising ways.

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Attribution: Exploratorium Teacher Institute