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We have annotated several hundred teaching resources cataloged in the National Science Digital Library with spatial concept terms listed below. We have also created a new TeachSpatial collection annotated in the same way. The concept terms were drawn from the U.S.National Science Education Standards (NSES 1996) for topic areas B - Physical Science, C - Life Science, D - Earth and Space Science, as well as from the 1994 U.S. Geography Teaching Standards for grades 9-12. Those standards can be browsed here.

spatial concept terms

NSDL teaching resources related to "straight"

This page introduces streams and channels and describes the geometry and dynamics of stream channels, including cross sectional shape, discharge, long profiles, base level, laminar and turbulent flow, the load of the stream, and floods. The site explains channel patterns, including straight, meandering and braided channels; erosion by streams; stream deposits, including floodplains and levees, terraces, alluvial fans, and deltas; and drainage systems, including drainage basins and divides, stream order, drainage patterns and continental divides.

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Streams and Drainage Systems

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