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    The Exploratorium
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    In this demonstration/activity, learners observe as a regular size marshmallow is blown through a tube made from a manila file folder. The result is spectacular, and the process provides a great...

    $1 - $5 per group Ages 8 - 18 10 to 30 minutes
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    Twin Cities Public Television
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    This activity (located on page 3 of the PDF) is a full inquiry investigation into the relationship between an object’s mass and the distance it is thrown by a catapult. Groups of learners will...

    $5 - $10 per group Ages 8 - 14 1 to 2 hours
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    Twin Cities Public Television
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    In this activity (page 1 of PDF), learners will construct an air cannon by cutting a hole in the bottom of a bucket and stretching a garbage bag over the other end. Then, they aim the cannon at a...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes
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    Science Friday
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    In this activity, learners build a stuffed-animal zip line. Learners hold a cord against a wall, hook a cute stuffed animal onto it, let the animal slide down, and records its travel time. Use this...

    $5 - $10 per group Ages 8 - 11 30 to 45 minutes
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    WGBH
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    In this activity, learners build a simple tabletop seesaw to test how different variables (the position of the fulcrum, distance, weight) affect its balance under increasing weight loads. Extension...

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes