Adventure Associates' “GeoTrek” activity is based on the recreational sport of geocaching—using GPS devices to locate containers, known as “caches.” The company has courses in 75 locations around the country, including one at Walt Disney World that requires participants to use the monorail, boats, and walking between resorts to locate each cache. Organizers provide a brief lesson on how to use GPS, and then teams of about four people each choose which caches they will attempt to locate based on point values, distances, and strategy. When teams reconvene, the company’s facilitators can lead participants in a discussion of what they learned followed by a tallying of each team’s scores.