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With little more than a flashlight, a straw, and a plastic lid, make an observatory so you can see the amazing colors in bubbles.

$1 - $5 per student Ages 4 - 11 5 to 10 minutes
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In this activity, learners discover what buoyancy is and determine the characteristics that make an object buoyant. Learners design, build, test, and evaluate boats made from a variety of materials.

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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In this physics activity (page 8-9 of the PDF), learners will explore wind energy. They will build their own windmill and see how energy from wind can be converted into a useable form.

$1 - $5 per group Ages 6 - 11 30 to 45 minutes
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This hands-on activity shows you how to build basic architectural shapes out of toothpicks and gumdrops.

$1 - $5 per student Ages 6 - 11 30 to 45 minutes
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Learners write or draw with white crayon on white paper. They look and feel to detect their marks on the paper. Then, learners paint over their paper with watercolor paint.

$1 - $5 per group Ages 4 - 14 Under 5 minutes
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In this activity, learners investigate why apples turn brown. Learners discover that lemon juice interferes with the reaction that causes the browning.

$1 - $5 per group Ages 4 - 11 2 to 4 hours
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In this activity, young learners will make their own flower seed nursery in an egg carton.

$1 - $5 per group Ages 4 - adult 1 to 4 weeks
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Learners see that a can of regular cola sinks while a can of diet cola floats. As a demonstration, bubble wrap is taped to the can of regular cola to make it float.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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This activity (on pages 7-13) has pairs of learners survey an array of similarities and differences between them.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners take on the role of various parts of the cell in order to model the process of protein synthesis.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this weather activity, learners build their own wind detector and test for the presence of convection currents in their indoor location.

$1 - $5 per student Ages 8 - 11 30 to 45 minutes
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In this activity, learners will explore surface tension, what it is, and how we can change it.

$1 - $5 per group Ages 4 - 11 5 to 10 minutes
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In this activity, learners measure the diameter of their water balloons, model an impact, measure the diameter of the “crater” area, and determine the ratio of impactor to crater.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners use multiplication skills to get groups of aliens safely back to their planet.

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers.

$1 - $5 per group Ages 4 - 14 45 to 60 minutes
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Even fast computers are limited to how quickly they can solve problems. One way to speed things up is to use several computers at once.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this demonstration, learners observe the effects of density and pressure by attempting to make "balloon kebabs." Learners will try to insert a wooden skewer all the way through an inflated balloon

$1 - $5 per group Ages 6 - adult 5 to 10 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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In this activity, learners will explore how different colors of lights interact with objects around them. Will a blue object stay blue with a red filter?

$1 - $5 per student Ages 4 - 18 5 to 10 minutes