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Learners tour their school or home looking for sources of indoor air pollutants (IAPs).

free Ages 8 - 14 45 to 60 minutes
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Learners cover a bottle with a balloon. When they immerse the bottle in warm water, the balloon inflates. When they immerse the bottle in a bowl of ice, the balloon deflates.

1 cent - $1 per group Ages 8 - 14 5 to 10 minutes
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Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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Learners observe and discuss a vacuum cleaner as a model of a baghouse, a device used in cleaning industrial air pollution.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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Learners test two jars of ice water, one covered and one open, for changes in temperature. After placing the jars in the sun, learners discover that the covered jar cools down more slowly.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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Learners create beautiful fluid motion. They explore fluid dynamics, surface tension, solubility, and buoyancy while mixing liquids together.

$5 - $10 per group Ages 11 - 14 45 to 60 minutes
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Learners develop an understanding of air pressure in two different activities.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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Learners build devices from rubber bands to test for invisible air pollutants.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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Learners color and cut out a spiral-shaped snake. When they hang their snake over a radiator, the snake spins.

free Ages 8 - 14 10 to 30 minutes
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In this engineering activity, learners investigate the differences between the strength of bridges made from flat and round building materials.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this great hands-on activity, learners use patterns to make a teepee from newspaper that they sit inside.

$1 - $5 per group Ages 8 - 11 45 to 60 minutes
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In this robotics activity, learners find ways to express emotions and feelings using only body movements, not facial expressions.

free Ages 8 - 14 45 to 60 minutes
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In this activity, learners engineer a flying glider using paper hoops and a drinking straw.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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In this activity, learners design and build a NASA rover using raw pasta and candy with a limited imaginary budget.

$5 - $10 per group Ages 8 - 18 30 to 45 minutes
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In this activity, learners determine whether thermal energy can be used for work.

1 cent - $1 per group Ages 11 - 18 45 to 60 minutes
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In this engineering design challenge, learners make a bird and then control its flight with attached strings.

$1 - $5 per group Ages 4 - 18 1 to 2 hours
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In this activity, learners use Jell-O to explore lenses. Learners cut Jell-O into convex and concave lens shapes and examine how light exits each lens in a darkened room.

$1 - $5 per student Ages 14 - 18 30 to 45 minutes
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Learners create an electrical-circuit maze out of wire, then try to pass a paperclip through the maze without touching the wire.

$1 - $5 per group Ages 11 - 14 1 to 2 hours
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In this activity, learners will build a stomp-powered launcher to blast off paper rockets they design. Materials can be found at a local hardware store or you may already have them at home.

$5 - $10 per group Ages 6 - 18 10 to 30 minutes
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In this activity, learners demonstrate and discuss simple circuits as well as the differences between parallel and serial circuit design and functions.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes