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Teotihuacan : designing an ancient Mexic...
Islamic art : recognizing geometric idea...
The Great Pyramid of Giza : measuring le...
The Great Barrier Reef : using graphs an...
Math in our solar system : applying prob...
Where we play sports : measuring the per...
You wouldn’t want to be an america...
You wouldn’t want to be at the Bos...
You wouldn’t want to be a greek at...
You wouldn’t want to be sick in th...
The airplane
Geologic time
The telephone
National geographic kids : almanac 2013
Steve Jobs, Steve Wozniak, and the perso...
Alexander the great
The history of zero : exploring our plac...
Natural wonders of the world : convertin...
Map math : learning about latitude and l...
Climbing Mount Everest : understanding c...