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27 Ideas for Teaching with Topographic Maps
Materials Required: Topographic maps, globe. Illustrate how lines of longitude converge from the equator to the poles. Illustrate the concept first on a globe. Next, show topographic maps from the northern part of the United States (North Dakota, for example) versus maps from the southern part of the country (Texas or Hawaii, for example).
 Tools, Tips, and Workflows Breaklines, Part 2 Contours
Tools, Tips, and Workflows Breaklines, Part 2 — Contours Lewis Graham Page 3 of 6 QCoherent Software LLC May 2013 www.LP360.com Figure 2: Stereo plotter set up for tracing In the 1980’s, the USGS embarked on a massive program to convert the map separates (these pieces of film) to digital format.
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