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    Bill Nye
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    In this activity, learners discover how sweating makes us feel cooler. Learners put on one damp sock and one dry sock and sit in front of a fan. As the water in the damp sock evaporates, it makes...

    free Ages 4 - 14 5 to 10 minutes
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    American Association for the Advancement of Science
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    Learners work together as a group to learn a new physical activity. After working for a few rotations, learners time themselves as part of a contest. Learners can use this activity to reflect about...

    free Ages 8 - 11 10 to 30 minutes
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    Center for Engineering Educational Outreach, Tufts University
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    In this activity, learners investigate the properties of different types of balls. Learners conduct experiments on four different balls to see which can bounce the highest and which continues...

    free Ages 8 - 11 1 to 2 hours
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    Sciencenter
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    In this chemistry challenge, learners discover that many chemical reactions involve heat loss or gain. With this understanding, they try to find a combination of chemicals that could be used to...

    $10 - $20 per group Ages 4 - 14 10 to 30 minutes
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    WGBH
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    In this design challenge activity, learners invent an emergency shelter that can fit a person and is sturdy and quick to build. Learners think about a familiar shape in new ways, brainstorm shelter...

    $10 - $20 per group Ages 8 - 14 30 to 45 minutes
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    Twin Cities Public Television
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    In this activity, learners compare ways to measure their heart rates. Learners build their own stethoscopes and learn how exercise affects heart rate.

    $5 - $10 per group Ages 8 - 14 1 to 2 hours
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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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    PBS
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    In this math lesson, learners measure, predict and determine the frequency of an event as it relates to how close Whirlybirds land to a target. In this simulation of a parachute jump competition,...

    1 cent - $1 per group Ages 8 - 11 45 to 60 minutes
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    American Association for the Advancement of Science
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    In this online activity, learners measure their pulse rates and investigate how their pulses change when they engage in different activities. Learners record their pulse rates at rest, after...

    free Ages 8 - 11 10 to 30 minutes
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    American Museum of Natural History
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    In this activity, learners interpret three trackways and use measurements and a formula to infer the relative speed of dinosaurs. A portion of the activity details how students can create their own...

    free Ages 11 - 14 45 to 60 minutes

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