1
By TED-Ed
Published in 2013
Fresh water accounts for only 2.5% of Earth's water, yet it is vital for human civilization. What are our sources of fresh water? In the first of a two part series on fresh water, Christiana Z. Peppard breaks the numbers down and discusses who is using it and to what ends.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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2
By TERC
Find many interactives on chapters ranging from earth systems to historical geology. Weather chapters are also included.
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3
"Earth science resources. Each """"Chapter"""" includes animations and movies, question answers, learning objectives, quizzes, related readings, flash cards, a glossary, and internet resources. "
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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