In this set of exercises, students will study rivers and waterways around them by using the Internet, maps, and their knowledge of local landscapes. The students will use an EPA Web site to investigate what is upstream and downstream of them. They will also look at graphs of flow in familiar river locations on a live U.S. Geological Survey Web site. Using small rocks and a washbasin, students will build a model that leads to extending their understanding of streams in different geographic locations. A topographic map exercise will expose students to topographic maps and allow them to look for the origins of streams. Finally, a reading exercise will illustrate the issue of the importance of lower-order streams to downstream areas, and students will be asked to implement their ideas to protect a stream on a dairy farm.

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