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Vanishing Craters
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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.

To Topo Two
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In this activity, two groups of learners create two separate landform models out of clay (mountains and valleys).

A Hole in the Ground
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Learners build models of sinkholes to gain an intuitive knowledge of their physical aspects.

Teen Moon: Moon Ooze
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In this activity, learners model how the Moon's volcanic period reshaped its earlier features.