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Grade 3 - Geometry & Measurement
Standard 3.GM.4.2 - Count the edges of three dimensional shapes.
construction of 3D shapes • identifying 3D objects according to the 2D shapes of the faces and the number of edges and vertices (e.g., construction of nets, skeletons) • describing the attributes of 3D objects (e.g., faces, edges, vertices) • identifying 3D objects by their mathematical terms (e.g., sphere, cube, prism, cone, cylinder) • comparing 3D objects (e.g., How are rectangular prisms and cubes the same or different?) • understanding the preservation of shape (e.g., the orientation of a shape will not change its properties) • jingle dress bells, bentwood box, birch bark baskets, pithouses