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In this activity (on pages 12-15), learners make a crater model and test the effects of weather (rain) on its surface.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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This activity models some of the ways natural processes, such as erosion and sediment pollution, affect Earth’s landscape.

Over $20 per group Ages 4 - adult 5 to 10 minutes