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    The Exploratorium
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    In this web-based activity, learners try to figure out who in an online chat room has their matching puzzle piece. This is a matchmaking activity that can be used as an icebreaker to introduce...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    WGBH
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    Professor John Endler traveled to Trinidad in the 1970s to study wild guppies. In this activity, learners take part in an online simulation of Endler's work. Learners collect data, formulate a...

    1 cent - $1 per group Ages 11 - adult 45 to 60 minutes
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    COSI
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    In this physics activity (page 4 of the PDF), learners will explore how similar magnetic poles repel one another. They will rely on linear induction to race magnets around a simple course. Although...

    $5 - $10 per group Ages 8 - 14 10 to 30 minutes
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    University of Washington
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    These two activities (4th on the page) demonstrate the importance of two eyes in judging depth. In the first activity, two learners compare the accuracy of dropping objects into a cup using only...

    1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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    American Society for Microbiology
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    Learners use a Microviewer to examine common objects at 60-100X magnification. After viewing these things, learners categorize them according to their properties. They create a game board to...

    Over $20 per group Ages 8 - 18 45 to 60 minutes
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    Twin Cities Public Television
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    This activity (on page 2 of the PDF) is a full inquiry investigation into the effects of exercise on short term memory. Groups of learners will set a baseline score with an initial memory test....

    free Ages 8 - 14 30 to 45 minutes
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    WGBH
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    In this optics activity, learners conduct an experiment to find out why two eyes are better than one! Learners compare how many pennies they can drop inside a cup with both eyes open versus their...

    free Ages 6 - 11 10 to 30 minutes
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    Twin Cities Public Television
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    This activity (on page 2 of the PDF) is a full inquiry investigation into tug-of-war physics. Groups of learners will test two tug-of-war strategies. Which is better: a team of a few big kids or...

    $10 - $20 per group Ages 8 - 14 2 to 4 hours
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    4-H
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    In this three-part activity, learners play a game and conduct two simple experiments to explore water and surface tension. Learners will have fun discovering how water "sticks" together....

    $1 - $5 per student Ages 8 - 11 10 to 30 minutes