From Seed to Soil

Students observe decaying plant matter in a closed system. Students classify and sequence specimens of seeds, sprouts, young plants, flowering and/or fruiting plants, and decomposing plants to understand how plant organic matter contributes to the formation of soil. Students make connections between the journey of organic matter contributing to forming humus for soil with the way a drop of water moves through the water cycle on our planet. Students learn the important components that interact to make this natural process function: plant life and decomposers from the biosphere, water from the hydrosphere, air in the atmosphere, rock particles from the geosphere, and, of course, the driving energy source, our Sun.

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ScienceOnASphere ScienceAdventure Planetarium
3.SL.4 GLO-1 GLO-2 GLO-5 SC.3.1.2 SC.3.8.1 SC.3.1.1 3-ESS2.A
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