GIS Lesson Demonstrating Local Maxima

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GIS_Lesson_Demonstrating_Local_Maxima Download
File Size:
500 KB
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GIS Level:
  • Beginning
Geographic Scale:
  • Global
  • National
  • State
  • Local
Target Audience:
  • Secondary

Students will find minimum and maximum elevations for a portion of Salem, VA, and then for various places in the US. They will use these findings to postulate about why Salem’s maximum elevation is not as big as Virginia’s, Colorado’s, and the whole USA. They will use this information to better understand local maxima and by induction, to better understand local minima. This is a sticking point for many of my students- Why is a value on a graph a “local” maximum when there is clearly a higher point elsewhere on the graph? Students will also choose a place where they believe will have a very high elevation and map its elevation.

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