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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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    The Exploratorium
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    In this activity, learners create angle-measuring devices--protractors--out of paper. Learners follow a series of steps to fold a square sheet of paper into a triangular Pocket Protractor. Learners...

    1 cent - $1 per student Ages 11 - 18 5 to 10 minutes
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    The Exploratorium
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    In this activity, learners use a hand-made protractor to measure angles they find in playground equipment. Learners will observe that angle measurements do not change with distance, because they...

    1 cent - $1 per student Ages 11 - 14 10 to 30 minutes
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    4-H
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    In this indoor and/or outdoor activity, learners make an anemometer (an instrument to measure wind speed) out of a protractor, a ping pong ball and a length of thread or fishing line. This is a...

    1 cent - $1 per student Ages 8 - 14 10 to 30 minutes