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In this activity, learners balance chemical equations and discover the law of conservation of mass. Learners use coins to model molecules to balance the equations.

free Ages 14 - 18 10 to 30 minutes
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In this math activity, learners role-play as wait staff at the Kidtropolis Diner. It's the end of the night and it's time for the staff to collect their tips.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes