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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!

1 cent - $1 per student Ages 6 - 18 10 to 30 minutes
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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.

$1 - $5 per student Ages 8 - 18 10 to 30 minutes
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In this activity, learners explore their eye pupils and how they change.

free Ages 8 - 14 10 to 30 minutes
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In this activity, learners estimate risks associated with different events and compare their estimates to the real possibilities.

1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners conduct a simple test to find their blind spot.

1 cent - $1 per student Ages 8 - 14 Under 5 minutes
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In this quick optics activity, learners use a dim point of light (a disassembled Mini MagLite and dowel set-up) to cast a shadow of the blood supply in their retina onto the retina itself.

$1 - $5 per student Ages 8 - 14 Under 5 minutes
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In this activity about light and perception, learners create pictures in thin air.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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Create an illusion where it appears that your hand has a hole in it. You'll see the results from when one eye gets conflicting information.

1 cent - $1 per student Ages 4 - 14 Under 5 minutes
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Experience a spinning spiral...you won't be hypnotized, but you'll see what happens when you look away. It's like getting off a merry-go-round and everything keeps moving.

1 cent - $1 per student Ages 6 - adult Under 5 minutes
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Up close, an array of dots could look random, but take a step back, and an image forms. By tracing over an image, learners can create their own dot based image.

1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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In this activity about afterimages, learners explore what happens when receptor cells called cones in your eye's retina get tired.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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In this activity, learners play with a fuzzy-colored dot that has no distinct edges seems to disappear. As learners stare at the dot, its color appears to blend with the colors surrounding it.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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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.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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In this activity about depth perception, learners create an optical illusion in a shoe box.

$1 - $5 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners discover a brain process called habituation.

free Ages 6 - 18 10 to 30 minutes
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Do you have a hard time matching paint swatches with your furniture? When you consider human perception, color is context dependent.

1 cent - $1 per student Ages 4 - adult 5 to 10 minutes
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In this lab (Activity #1 on page), learners explore how we see color.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this demonstration, amaze learners by performing simple tricks using mirrors. These tricks take advantage of how a mirror can reflect your right side so it appears to be your left side.

Over $20 per group Ages 8 - 14 10 to 30 minutes
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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.

1 cent - $1 per student Ages 8 - 18 10 to 30 minutes
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We don't normally view people upside down and so our brains aren't accustomed to it.

free Ages 4 - 18 Under 5 minutes