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This simple, yet surprising physics demonstration challenges preconceptions about forces, and demonstrates the strength of atmospheric pressure.

free Ages 4 - adult Under 5 minutes
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In this quick activity, learners observe how the added sugar in a can of soda affects its density and thus, its ability to float in water.

$1 - $5 per group Ages 6 - 14 Under 5 minutes
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In this demonstration, learners observe as a bottle is placed on a table with wooden hoop balanced on top and a pencil balanced on top of the hoop.

$1 - $5 per group Ages 8 - 18 Under 5 minutes
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In this activity, learners explore how ordinary marshmallows expand when heated in a microwave.

$1 - $5 per group Ages 6 - 14 Under 5 minutes
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In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.

1 cent - $1 per group Ages 4 - adult Under 5 minutes
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In this demonstration, learners observe the effects of air pressure. They will watch as marshmallows inside a bottle expand as a vacuum pump removes air from the bottle.

$1 - $5 per group Ages 4 - adult Under 5 minutes
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In this chemistry activity, learners are asked to form a hypothesis about the behavior of milk as household detergents act upon it.

$1 - $5 per group Ages 8 - 18 Under 5 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 physics demonstration, learners will be surprised when a handkerchief holds water in an upside-down glass.

free Ages 4 - adult Under 5 minutes
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In this activity, learners make some music by constructing a kazoo out of a simple plastic drinking straw. Use this activity to explore sound, vibrations, and music.

1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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This is a quick activity/demonstration that introduces learners to the concept of index of refraction. Learners place stirring rods in a jar of water and notice they can see them clearly.

1 cent - $1 per group Ages 8 - 18 Under 5 minutes
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In this activity, learners cook amino acids and sugar to explore the range of aromas released.

$10 - $20 per group Ages 6 - 14 Under 5 minutes
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In this optics activity, learners use paint thinner to make a small jar seem to disappear inside a larger jar.

1 cent - $1 per student Ages 8 - 14 Under 5 minutes
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This is a quick, yet dramatic activity/demonstration that introduces learners to the concept of energy transfer. A small ball is placed on top of a large ball and both are dropped together.

free Ages 6 - 14 Under 5 minutes
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In this demonstration, learners observe how liquid nitrogen both boils and freezes ingredients to make ice cream in two minutes.

$10 - $20 per group Ages 6 - 14 Under 5 minutes
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In this quick activity/demonstration about density, learners examine what happens when two cans of root beer--one diet and one regular--are placed in a large container of water.

1 cent - $1 per group Ages 4 - 14 Under 5 minutes
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In this chemistry demonstration, learners observe a chemical reaction that produces a colorful effect.

$1 - $5 per group Ages 11 - 18 Under 5 minutes
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In this physics demonstration, learners are challenged to break a raw egg just by squeezing it. Learners will be shocked by their inability to complete the deceivingly simple challenge.

1 cent - $1 per group Ages 4 - adult Under 5 minutes
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In this quick activity, learners use a toaster to investigate the source for the Earth's wind. Learners hold a pinwheel above a toaster to discover that rising heat causes wind.

free Ages 4 - 14 Under 5 minutes
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In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

free Ages 6 - 18 Under 5 minutes