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Math Lesson for Earth Day…
Earth Day Problems
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In 1970, Gaylord Nelson of Wisconsin proclaimed April 22 to be “Earth Day.” More than 20 million people participated in the first “Earth Day,” which helped raise America’s awareness of environmental issues.
1. Rainforests cover only a small part of the Earth but they are home to more […]
Entries from April 2008
Happy Earth Day…
April 21st, 2008 · 1 Comment
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