Teachers nationwide are finding more uses for global positioning systems in allowing students to tackle real-world problems. Suggestions include using GPS technology in the classroom to map and collect data on trees on school property or using it to study historic sites. "It's a natural bridge to use GPS and geocaching to develop kids' awareness to their location, their community, and their environment," an instructional-technology specialist said. "They start to understand where they are."
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http://www.edweek.org/dd/articles/2010/10/20/01gps.h04.html