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Learners place an M&M candy in water and observe what happens. The sugar-and-color coating dissolves and spreads out in a circular pattern around the M&M.

1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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Learners carefully look at four known household crystals.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes