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    WGBH
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    In this activity, learners conduct an experiment to test how fast they can react. Learners try to catch a piece of paper with a ruler printed on it (or a ruler) as quickly as they can. Learners...

    free Ages 6 - 11 5 to 10 minutes
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    University of Minnesota
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    In this activity, learners discover that the human brain is highly adaptable. Learners try to toss beanbags at a target while wearing prism goggles. Learners collect and interpret data and then...

    $10 - $20 per group Ages 8 - 18 45 to 60 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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    WGBH
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    In this optics activity, learners conduct an experiment to explore peripheral vision. Learners collect data about their ability to see shapes, colors, or letters using their peripheral vision.

    1 cent - $1 per group Ages 6 - 11 10 to 30 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