If you are looking to modernize your S-P lab, or are tired of having your students struggle to use a compass to draw circles on flat maps with poor results, this simple Java-based program is your answer. Through a simple, task-specific interface students enter the location information for three stations and the distance that they determined the quake was from each. Students then click "Okay". The program then writes a KML file named "small_circles.kml" in the folder where the program is stored. This KML file can then be opened in Google Earth as shown in the image above.
This program was written by Glenn Kroeger at Trinity University.