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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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    Twin Cities Public Television
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    In this health and fitness activity, learners focus on the importance of daily physical activity, specifically walking. Learners use a simple method to measure their stride lengths and then...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes
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    Twin Cities Public Television
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    In this activity (page 1 of the PDF under SciGirls Activity: Double Dutch), learners will stand twelve feet apart swinging a rope at the slowest tempo possible while someone uses a stopwatch to...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    The Exploratorium
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    This trick from Exploratorium physicist Paul Doherty lets you add together the bounces of two balls and send one ball flying. When we tried this trick on the Exploratorium's exhibit floor, we...

    $1 - $5 per group Ages 11 - adult 10 to 30 minutes
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    Twin Cities Public Television
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    In this sports-themed engineering activity, learners create super bouncy balls out of balloons. Learners brainstorm, test their designs, and share results.

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes

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