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Fourth graders model water's role in changing Earth's surface.
Great article with lesson for students to design and test a model to prevent or slow down erosion. The materials are easy to find and inexpensive.
Pamela Dupre (Lake Charles, LA)
This excellent article has an easy to do activity for students to learn about water erosion. It also has a good explanation about erosion and a wonderful website with thousands of pictures relating to Earth Science.... http://www.earthscienceworld.org/imagebank/
Betty Paulsell (Kansas City, MO)
$0.99 - Nonmembers