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Learners follow a three-step process to start their own rock collection.

$1 - $5 per student Ages 8 - 14 1 to 7 days
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In this activity, two groups of learners create two separate landform models out of clay (mountains and valleys).

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this activity (page 2 of PDF under GPS: Cave Swallows Activity), learners will model how caves are formed by placing one piece of chalk in a cup of vinegar and another piece in a cup of water, then

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners take core samples of candy bars with a straw and carefully observe & excavate their sample, modeled after what the NASA Perseverance rover will do on Mars.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes