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In this activity, learners will engineer their own weather vane. This activity includes step-by-step instructions with pictures and a "What's Happening?" section explaining how the activity worked.

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

In this activity, learners will explore the water cycle by creating a small atmosphere.

Learners build models of sinkholes to gain an intuitive knowledge of their physical aspects.