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    IEEE
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    In this activity, learners review the history of gumball machines and explore potential and kinetic energy, while working in teams to build a gumball slide. Teams then design and build their own...

    Over $20 per group Ages 8 - 18 2 to 4 hours
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    IEEE
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    In this activity, learners explore the history, design and motion of spinning tops. Learners work in teams of "engineers" to design and build their own tops out of everyday items. Their...

    $10 - $20 per group Ages 8 - 18 1 to 2 hours
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    IEEE
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    In this activity, learners explore sports engineering and advanced materials development. Learners work in a team to devise a racquet out of everyday materials that could be used to volley a ping...

    $10 - $20 per group Ages 8 - 18 1 to 2 hours
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    Lunar and Planetary Institute
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    In this activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force). Learners then apply this...

    Over $20 per group Ages 4 - 11 10 to 30 minutes
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    Lawrence Hall of Science
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    Scientists use enormous wind tunnels to test the design of planes, helicopters, even the Space Shuttle. In this simulation activity, learners create a miniature wind tunnel test by blowing air with...

    $5 - $10 per group Ages 6 - 14 10 to 30 minutes
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    Science Museum of Minnesota
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    In this activity, learners construct drawing machines using a cup, some markers, and a cricket to control the movement. A programmed LEGO RCX or Cricket is required for this high-tech version. See...

    $1 - $5 per student Ages 8 - 14 45 to 60 minutes
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    WGBH
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    In this simple and fun activity, learners discover the relationship between vibration and sound by making a squeaky toy instrument out of simple household materials. Participants explore how...

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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    WGBH
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    This event guide features three related explorations in which learners investigate the following science concepts: how you design and build a structure helps determine how strong it will be;...

    $5 - $10 per group Ages 4 - 6 45 to 60 minutes
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    COSI
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    In this fun and, at times, hilarious force and motion activity, learners will use household objects to build a crazy contraption and see how far they can get a tennis ball to move. This is an...

    $1 - $5 per group Ages 4 - adult 1 to 2 hours
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    Community Science Workshop Network
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    Learners use shop tools and various materials to construct a magnetic spinner and a compass. Learners blow on the spinner directly or through a straw, and will be amazed as it continues to spin,...

    $1 - $5 per student Ages 8 - 14 1 to 2 hours

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