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In this activity, learners construct a three-dimensional ambiguous cube to explore visual illusions and how our brains interpret or misinterpret information.

$1 - $5 per student Ages 8 - 18 10 to 30 minutes
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In this lab (Activity #2 on page), learners compare bacteria growth on two petri dishes containing nutrient agar. Learners touch the doors, faucets, etc.

$1 - $5 per group Ages 8 - 18 1 to 7 days
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Learners discover how important their thumbs are by attempting various tasks without them. After tying up their thumbs, learners attempt to legibly write their names or play catch with a tennis ball.

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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In this activity, learners will experiment with water- and air-filled balloons as a way of dampening sound before it reaches their ears.

$5 - $10 per group Ages 11 - adult 10 to 30 minutes
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Your tongue can sense about 6 different flavors (salty, sweet, bitter, sour, umami/savory, and fat), but your nose provides a lot more "taste" information than you realize when you eat.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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Ancient trash tells archaeologists a lot about the past. In this activity, learners take a close look inside their trash can and think about the clues it offers about their lives.

$1 - $5 per student Ages 6 - 14 45 to 60 minutes
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In this activity, learners simulate the process of DNA fingerprinting by using electricity to separate colored dyes.

Over $20 per group Ages 11 - 18 1 to 2 hours
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In this activity, learners explore why they can see colors in bubbles and why they change.

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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In this optics activity, learners work in pairs to explore how mirrors work. Learners use tape to mark the angles needed to see each other's reflection in a wall mirror.

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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In this outdoor activity/field trip, learners investigate organisms that live along the ocean's rocky coast.

$10 - $20 per group Ages 8 - adult 1 to 12 months
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In this activity (6th on the page), learners investigate how photoreceptors in the eye (rods and cones) "adapt" to low light conditions.

free Ages 8 - 18 10 to 30 minutes
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In this activity, learners calculate the width (horizontal diameter) of the blind spot on their retina. Learners make a blind spot tester using a piece of notebook paper.

1 cent - $1 per student Ages 11 - 18 5 to 10 minutes
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In this game (4th activity on the page) about hearing, learners test their ability to identify various sounds without looking.

free Ages 4 - 14 5 to 10 minutes
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This is a quick activity (on page 2 of the PDF under Stained Glass Activity) about the "Tyndall effect," the scattering of visible light when it hits very small dispersed particles.

$5 - $10 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners practice counting and multiplication as they figure out how many animal body parts they have to examine as "Dr. Vet."

1 cent - $1 per group Ages 4 - 8 10 to 30 minutes
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In this data analysis activity, learners quantify the abundance and distribution of sea scallops in and adjacent to the Mid-Atlantic closed areas.

$1 - $5 per student Ages 14 - 18 1 to 2 hours
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In this activity, learners investigate whether more people are squares or rectangles. People with similarly sized heights and arm spans are classified as squares.

free Ages 6 - 11 10 to 30 minutes
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This is a great activity about human energy production. Learners will work out with a clothespin to investigate why hockey players jump on a stationary bike after an intense game.

1 cent - $1 per student Ages 14 - adult 10 to 30 minutes
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In this outdoor activity, learners discover the wonders of the habitat surrounding them.

$1 - $5 per student Ages 4 - 11 45 to 60 minutes
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In this quick and easy activity and/or demonstration, learners use two empty 2-liter bottles and hot tap water to illustrate the effect of heat on pressure.

free Ages 6 - 18 5 to 10 minutes