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    The Exploratorium
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    In this activity, learners build bridges and cantilevers in a series of "building out" challenges with straws and pins. In doing so, learners will experience many of the basic physics and...

    $1 - $5 per group Ages 4 - 14 1 to 2 hours
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    The Exploratorium
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    With two stacks of books and a few rolls of pennies, build two kinds of bridges--a beam span and an arch span--and see how much weight each of them can hold. Besides step-by-step instructions for...

    $1 - $5 per group Ages 6 - 11 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners make bridges using an oil-based modeling clay (plasticene). The instructions include discussion questions for both before and after bridge building. Key learning ideas...

    $1 - $5 per group Ages 4 - 11 30 to 45 minutes

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