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    The Exploratorium
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    This activity shows you how to make amazing crystal spikes using Epsom salt and the sun. When Epsom salt is dissolved in water and placed in a container in the sun, the water evaporates, leaving...

    $1 - $5 per student Ages 6 - 11 1 to 2 hours
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    The Exploratorium
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    In this activity, learners repeat patterns in two and three dimensions to create tessellations. This activity is divided into four parts, in which learners practice tessellating with one shape, two...

    $1 - $5 per group Ages 8 - 11 1 to 2 hours

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