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Lesson Plan

Compare the two dimensional cross-sections formed by slicing three dimensional right prisms and pyramids by sorting qualities of the cross-sections

teaches Common Core State Standards CCSS.Math.Content.7.G.A.3
teaches Common Core State Standards CCSS.Math.Practice.MP7

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Big Ideas: Cross-sections formed from slices depend on the number of sides that are intersected during the cut. There more opportunities to create different shaped cross-sections when slicing diagonally, based on the different angles that can be achieved. This lesson focuses on comparing the different cross-sections that are formed by slicing a three-dimensional solid. Students will use their knowledge of slicing figures vertically, horizontally, and diagonally to explain the cross-sections that can be formed. Students will expand on this knowledge by comparing the different cross-sections that are formed. Vocabulary: two-dimensional, three-dimensional, slice, pyramid, prism, face, apex, horizontal, vertical, diagonal. Special Materials: Clay and cutting tools (optional)
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