Essential Content for Elementary Teachers
I. Become familiar with projections, cross-sections, and decompositions of common two- and three-dimensional geometric shapes
II. Construct three-dimensional geometric shapes from two-dimensional shapes and use a two-dimensional representation for three-dimensional shapes
III. Create and recognize a geometric shape from different perspectives (top, bottom, side)
IV. Use appropriate software (such as the Geometer's Sketchpad™) for showing representations of geometric shapes
