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6-8 1 9-12 1 astronomy 1 earth science 1 elementary school 1 high school 1 k-12 1 more ...
6-8 1 9-12 1 astronomy 1 earth science 1 elementary school 1 high school 1 k-12 1 more ...
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This site gives substantial information on Earth System Science (ESS). It's best for teachers who need background information. It also gives links to other sites and sources (such as a Solar System Calculator and Sun Path Activity).
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