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Learners model the processes that formed some of Earth's largest mountain ranges: the Himalayas, the Andes, and the Alps.

1 cent - $1 per student Ages 8 - 11 10 to 30 minutes
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In this activity, learners try to figure out who has their matching rock type by reading a description of their rock (no talking!).

$10 - $20 per group Ages 8 - 18 45 to 60 minutes