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Cycles: From Rot to Radishes

3-5, 6-8Schoolyard Ecology
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The central investigation of this unit helps students answer the question "Where does the stuff living things are made of go after those organisms die?"  Throughout the unit, students grapple with the notion that matter is neither created nor destroyed, but it takes different forms as it cycles - as part of a living thing at one point in time, then as part of the non-loving environment at another