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In this activity, learners touch supercooled water drops with an ice crystal and trigger the water drops to freeze instantly.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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In this activity, learners investigate the movement of water into and out of a polymer. Learners test the diffusion of water through gummy bears, which are made of sugar and gelatin (a polymer).

$1 - $5 per student Ages 11 - 18 1 to 7 days