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        PreK-12

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        Part of South Dakota Public Broadcasting
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        Images of the Past | Land Subsidence: Support (Earth Science)

        During this activity your students will learn about the issue of land subsidence, which leads to topographical changes. Subsidence is due to poor backfilling/stabilization practices during the mining of gold. Then your students will complete an activity in which they will use materials like sand and coffee grounds to understand the importance of backfilling and stabilization. (Lesson Plan)

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