Essential science for teachers, life science. Session 8, Material cycles in ecosystems / produced by Harvard-Smithsonian Center for Astrophysics ; producer, Shannon Densmore ; series producer, Clive A. Grainger.
Essential Science for Teachers courses are designed to help K-6 teachers gain an understanding of some of the bedrock science concepts they need to teach today's standards-based curricula. The series of courses will include Life Science, Earth and Space Science, and Physical Science. Life Scien...
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