The World Wide Web has examples of air photos that may be observed and discussed by the students. The resources for this lesson focus on the collection of information using air photos. The dot planimeter is a time-tested method that provides reliable estimates of area. The use of air photos to classify and monitor land use occurs in other parts of the United States and the World.

National Wildfire Coordinating Group. 2007. Basic Land Navigation PMS475. Boise: National Wildfire Coordinating Group, pp. 2.23-2.25. Retrieved from http://www.nwcg.gov/pms/pubs/475/PMS475_chap2b.pdf

United Growth For Kent County and the Michigan State University Extension. This Land Is Your Land: Lesson Plans for Land Use. Retrieved May 24, 2005, from http://msue.anr.msu.edu/uploads/236/66856/landuse.pdf