The document summarizes the use of GPS (Global Positioning System) units for educational purposes. It describes how GPS uses satellites to determine location through latitude and longitude. It then discusses how two GPS units owned by the school, the Garmin Geko 101 and Garmin Rino 101, can be used to mark locations, find waypoints, and log coordinates for activities like geocaching, hiking, and driving directions. Additional features allow customizing waypoints with symbols and changing settings like bearing and speed.