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    Community Science Workshop Network
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    In this activity, learners build a hot air balloon using just a few sheets of tissue paper and a hair dryer. Use this activity to demonstrate how hot air rises due to density and how the volume of...

    $1 - $5 per student Ages 6 - 18 30 to 45 minutes
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    American Chemical Society
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    In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain. Antacid tablets made with calcium carbonate are used to represent marble (also made from...

    1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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    WGBH
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    In this activity, learners will build a roller coaster for a marble to run on using everyday household materials such as paper towel or toilet paper rolls, cups, boxes, books, buckets, chairs, etc....

    $1 - $5 per group Ages 6 - 11 30 to 45 minutes
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    NISE Network
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    This activity introduces learners to the structure and properties of carbon nanotubes. Visitors learn how the carbon atoms are arranged in a carbon nanotube, and that nanotubes are extremely strong...

    $10 - $20 per group Ages 6 - adult 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape. In doing so, learners will experience many...

    $5 - $10 per group Ages 6 - 14 2 to 4 hours
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    Lawrence Hall of Science
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    In this engineering/design/arts and crafts activity, learners design and build "platforms" or "bridges" that can hold weight, and test which glue makes the strongest structure....

    $1 - $5 per student Ages 6 - 14 1 to 2 hours
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    Mount Holyoke College
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    In this activity, learners make a paper model of a polymer, then make Silly Putty, an actual polymer. For the model, learners make chains of paper dolls and color them in different ways to...

    $1 - $5 per student Ages 4 - 14 10 to 30 minutes
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    WGBH
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    This fun activity uses simple materials such as milk cartons and mirrors to introduce the ideas of optics and visual perception. The project is easy to do, however adult assistance may be needed to...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    WGBH
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    In this activity, learners construct a playable kazoo from inexpensive materials. They will experience how vibration creates sound waves and music. Changing the materials their kazoo is made of,...

    1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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    Lawrence Hall of Science
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    Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space. Boomerangs are believed to have originated among the Aborigines of Australia, so this activity could be used in...

    1 cent - $1 per student Ages 4 - 14 10 to 30 minutes

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