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In this optics activity, learners discover how they can make glass objects "disappear." Learners submerge glass objects like stirring rods into a beaker of Wesson™ oil to explore how the principles of

1 cent - $1 per group Ages 6 - 14 10 to 30 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 discover that nanoparticles of gold can appear red, orange or even blue. They learn that a material can act differently when it’s nanometer-sized.

Over $20 per group Ages 4 - adult 5 to 10 minutes
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In this activity, learners explore inertia as they attempt to whip a strip of paper out from under two coins dangling on the rim of a water glass.

free Ages 6 - 14 5 to 10 minutes
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In this activity, learners create a "mini sky" in a glass of water in a dark room.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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In this quick SciGirls activity (page 1 of the PDF under SciGirls Activity: Doghouse Design), learners will be introduced to the concept of thermal conductivity.

1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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This activity/demo introduces learners to aerogel, a glass nanofoam. Learners discover how aerogel is made and how well it insulates as well as learn about aerogel's other unique properties.

Over $20 per group Ages 6 - adult 5 to 10 minutes
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In this physics demonstration, learners will be surprised when a lemon slice appears to magically levitate within a pint glass.

1 cent - $1 per group Ages 8 - adult Under 5 minutes
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In this activity, learners are challenged to lift a floating ice cube out of a glass of water using just one end of a piece of string.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.

$1 - $5 per group Ages 4 - adult 5 to 10 minutes