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In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own.

$1 - $5 per student Ages 6 - 14 1 to 7 days
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Learners grow sugar crystals (rock candy). They make a hot solution that has an excess of sugar dissolved in it, then as the solution cools, they see sugar crystals form.

$1 - $5 per student Ages 6 - 11 4 to 24 hours
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In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.

$5 - $10 per group Ages 6 - 14 30 to 45 minutes