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    Lunar and Planetary Institute
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    In this activity, learners measure the diameter of their water balloons, model an impact, measure the diameter of the “crater” area, and determine the ratio of impactor to crater. This activity is...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    New York Hall of Science
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    Design and create an optical illusion toy that makes two pictures appear to become one. This is called a thaumatrope and will allow the learner to investigate the phenomenon of persistence of...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    WGBH
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    In this invention challenge activity, learners create an indoor game for one or two people that gets you moving. This lesson guide includes instructions on how to play an “imagine new uses for old...

    $10 - $20 per group Ages 8 - 14 30 to 45 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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    Community Science Workshop Network
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    In this activity, learners build a toy that flies in circles. This activity introduces learners to center of mass, torque, and rotational motion.

    $5 - $10 per student Ages 6 - 18 45 to 60 minutes
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    Institute of Physics
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    In this indoor or outdoor demonstration, use a large and small ball to illustrate conservation of energy and momentum. Learners will compare how high the balls bounce when bounced individually or...

    free Ages 4 - adult Under 5 minutes
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    The Exploratorium
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    In this physics activity, learners assemble and/or investigate a pendulum "snake." Several large steel hex-nuts are suspended on strings of successively increasing length to form a series...

    $10 - $20 per group Ages 8 - 18
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    WGBH
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    In this physics activity, challenge learners to make a rubber band-powered spool racer. Demonstrate principles of motion as well as potential and kinetic energy.

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    Utah Education Network
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    In this math lesson, learners explore the concept of using units to measure length. Learners first read "How Big is a Foot" by Rolf Myller and learn about units. Then, learners visit four...

    $5 - $10 per group Ages 4 - 6 45 to 60 minutes
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    University of Washington
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    In this activity (15th activity on the page) about the sense of touch, learners use glue and cardboard to construct a maze they use with their eyes closed. Learners rely only on their fingertips to...

    1 cent - $1 per student Ages 4 - 14 30 to 45 minutes

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