Children learn that polygons are shapes that are completely closed and have only straight sides. After sorting shapes that are polygons and that are not polygons, they then learn the attributes (specifically the number of sides and angles) of triangles, quadrilaterals, pentagons, and hexagons. This PowerPoint lesson is a multi-click animation sequence that introduces standards-based math skills and concepts. Also includes three practice pages at levels A (below grade level), B (at grade level),
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