DESCRIPTION Here is a complete unit to teach 2D & 3D shapes to an elementary class. It includes 12 lessons, many hands-on activities, review, a unit test, reference sheets, a cover page, and answer keys. Topics taught with the 2D shapes include naming the shapes (circle, oval, semicircle, triangle, quadrilateral, parallelogram, trapezoid, rectangle, square, rhombus/diamond, pentagon, hexagon, heptagon, octagon, nonagon, and decagon), recognizing the number of sides, types of angles in the 2D s