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What is geocaching? Geocaching is a recreational activity in which someone "hides" something for others to try to find using a Global Positioning System (GPS) receiver. The pursuit can be thought of as a GPS-enabled treasure hunt. Usually, a geocache consists of a small, waterproof container that holds a logbook and inexpensive trinkets, called the "cache"; sometimes items are exchanged.
During a summer workshop funded by Lilly Endowment, a group of us learned about geocaching, used GPS units, and found three caches! We also discovered several classroom applications.
GPS Lessons/Protocols
GPS Overheads
GPS Meets Orthophotography
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