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PBS
Pbs Learning Media: Calculating Rectangular Area
In this video segment from Cyberchase, the CyberSquad measures Judge Trudy's land claim by using tarps, fence posts and a grid made with rope.
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University of Akron: Research Challenges Location of 'Tornado Alley'
Geographer Michael Frates redefines the concept of Tornado Alley by using a grid system to map tornado activity in the U.S. Download the Tornado Alley map and locate the other tornado active areas: Hoosier Alley, Dixie Alley and the...