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Ages: 8-up
For grades: 3, 4, 5, 6, 7, 8, 9, S, Jr, Sr.
Teaches: science, geology, geography, earth science
CTR Oct 15 Feature Review Entered 09/17/2015 by Warren Buckleitner, Modified 12/13/2016 by LD
Our planet is always changing, right under our feet. B...
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