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This is written as a static display, but can easily become a hands-on experiment for learners.

$5 - $10 per group Ages 14 - adult 30 to 45 minutes
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In this activity, sodium acetate hand warmers are used to introduce learners to supersaturated solutions, crystallization, and exothermic reactions.

$5 - $10 per student Ages 14 - 18 45 to 60 minutes