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    The Exploratorium
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    In this geology activity learners build a "squeeze box," which allows them to compress layers of sediment. This is a great way to investigate folding and faulting in the Earth. The...

    $10 - $20 per group Ages 8 - 18 5 to 10 minutes
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    American Physical Society
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    In this simple demonstration, learners investigate the properties of air pressure. Learners place an index card on top of a glass full of water, then invert the glass. The surface tension of the...

    free Ages 8 - 14 5 to 10 minutes
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    The Center for Science Education @ Space Sciences Laboratory, UC Berkeley
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    In this activity, learners build a simple "rocket" with ordinary household materials to demonstrate the basic principles behind rocketry and the principle of reaction. This activity can...

    $1 - $5 per student Ages 6 - 14 5 to 10 minutes
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    The Exploratorium
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    In this demonstration, learners investigate mass, gravity, and acceleration by dropping a wooden bar with a balloon attached to its underside, a mass suspended from it by rubber bands, and a sharp...

    $5 - $10 per group Ages 11 - 18 5 to 10 minutes
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    American Association for the Advancement of Science
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    Learners complete two simple experiments to prove the existence of air and air pressure which surround us. First, they push an inverted cup into water; the air in the cup prevents water from...

    1 cent - $1 per group Ages 8 - 11 5 to 10 minutes
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    Community Science Workshop Network
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    In this activity, learners construct a paper glider to experiment with aerodynamic forces. Learners explore how the glider's structure, including the two flaps near the back called elevators,...

    1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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    New York Hall of Science
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    In this activity, learners complete simple exercises to investigate the relationship between force, area and pressure and their effects on materials. Use this activity to introduce learners to how...

    1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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    New York Hall of Science
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    Explore the effects of gravity on a slowly falling object: a parachute you make out of plastic bags, string and stones. You'll see how small and large parachutes act differently and the same,...

    1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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    New York Hall of Science
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    In this quick activity, learners break the tension that happens when water develops a "skin." Learners use water, pepper and some soap to discover the wonders of surface tension—the force...

    $1 - $5 per student Ages 6 - 11 5 to 10 minutes
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    WGBH
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    In this physics activity, challenge learners to make and race a balloon-powered car. Learners construct the body out of a paper cup, wheels out of wooden spools. and fuel tank out of a balloon....

    $1 - $5 per student Ages 6 - 11 5 to 10 minutes

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