You might not expect to see groups of educators running from place to place in downtown Austin, but that's exactly what passersby saw Feb. 7 as attendees of the Texas Computer Education Association's annual conference participated in "geocaching"--an outdoor scavenger hunt in which enthusiasts across the planet use handheld global positioning system (GPS) devices to locate hidden outdoor objects.

Educators at TCEA received an introduction to geocaching, with an eye toward how it might fit into their curricula. But in its global form, geocaching takes place all over the world.

The word "geocaching" comes from "geo," for geography, and "caching," for the...

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