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    COSI
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    In this demonstration about force and motion, learners will explore the forces that affect a pendulum A simple model pendulum comprised of a ball and string demonstrates how pendulums work as well...

    $1 - $5 per student Ages 4 - 11 5 to 10 minutes
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    American Chemical Society
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    This lesson focuses on molecular motion in gases. Learners compare the mass of a basketball when it is deflated and after it has been inflated. The inflated ball has the greater mass so learners...

    $5 - $10 per group Ages 11 - 14 45 to 60 minutes
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    COSI
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    In this physics activity, learners will investigate the strength of egg shells. They will attempt to stack books on top of inverted half egg shells to see how many they can hold, and the results...

    1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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    Institute of Physics
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    In this physics demonstration, learners will be surprised when a handkerchief holds water in an upside-down glass. They will be especially shocked when you hold the glass over their head and...

    free Ages 4 - adult Under 5 minutes
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    BioEd
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    In this activity about combustion and energy, learners observe a burning candle in a sealed jar and the burning of white sugar. The first part of the activity (candle burning) should be conducted...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    University of Washington
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    This is a quick and simple demonstration about reflexes (second activity on the page). During a discussion about the brain and nervous system, the educator slams a book on a table to create a loud...

    free Ages 4 - 18 Under 5 minutes
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    California Academy of Sciences
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    In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting. This activity can be conducted as a demonstration...

    $5 - $10 per group Ages 8 - 14 2 to 4 hours
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    Institute of Physics
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    In this demonstration about momentum, use physics to distinguish between a hard-boiled egg and a raw egg without cracking them open. Learners will discover that hard-boiled eggs are much easier to...

    1 cent - $1 per group Ages 4 - adult Under 5 minutes
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    Astronomical Society of the Pacific
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    This fun and simple hands-on astronomy activity demonstrates the shadow of the Earth as it rises as a dark blue shadow above the eastern horizon. Shadows are not just what we see on the sidewalk,...

    $5 - $10 per group Ages 6 - adult 10 to 30 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    In this demonstration, learners observe vinegar and baking soda creating carbon dioxide (CO2) in a bottle. The gas is poured out of a bottle onto a candle flame, putting out the candle. This...

    1 cent - $1 per group Ages 8 - 14 5 to 10 minutes

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