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    The Exploratorium
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    This is an activity about reaction times. Just how quickly must an NHL goalie respond to save a shot, and how does your reaction time compare? In order to figure out, learners must describe motion...

    1 cent - $1 per group Ages 14 - adult 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners will discover how to find the "sweet spots" on a baseball bat. Whenever an object is struck, it vibrates in response. These vibrations travel in waves up and...

    1 cent - $1 per group Ages 8 - 18 10 to 30 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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    COSI
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    In this astronomy activity (page 3 of the PDF), learners will examine the effects of gravity on a person’s pulse and explore how gravity can differ from planet to planet. Although this activity was...

    free Ages 11 - 18 10 to 30 minutes
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    Lawrence Hall of Science
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    In this movement and measurement activity, learners jump as far as they can three times, and compare their longest jump to the longest jump of their friends, classmates and/or family members....

    $1 - $5 per student Ages 6 - 18 10 to 30 minutes
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    The Exploratorium
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    When baseball was in its infancy, the ball had plenty of bounce. Today's baseball may not seem to have bounce to it at all; if you drop a ball on the field it won't bounce back. This...

    1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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    The Exploratorium
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    You may have tried to throw a curveball or a slider, or even a screwball, with an ordinary baseball and found it difficult to do. In this activity, learners use a Styrofoam ball to more easily...

    1 cent - $1 per student Ages 8 - 18 10 to 30 minutes
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    PBS
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    In this math lesson, learners explore the relationship between the thickness of a spaghetti bridge, the length of the bridge, and the amount of weight that can be supported by the bridge. Learners...

    $5 - $10 per group Ages 14 - 18 45 to 60 minutes
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    Computer Science Unplugged
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    This activity about cryptographic techniques illustrates how to accomplish a simple, but nevertheless seemingly impossible task—making a fair, random choice by flipping a coin between two people...

    $1 - $5 per group Ages 8 - 18 30 to 45 minutes
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    COSI
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    In this activity, learners design a bicycle helmet. Participants will explore the design of bicycle helmets to gain an appreciation for the role that helmet layers play protecting the head. They...

    Over $20 per group Ages 11 - 18 45 to 60 minutes

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