This is a SMSG geometry text for elementary teachers. This volume has been prepared to help elementary teachers develop a sufficient subject matter competence in the mathematics of the elementary school program. The editors feel that elementary teachers need a thorough discussion of all the materials they might teach in grades 4, 5, and 6, from a higher point of view, but presented in much the same way they would present it. The content is the same as the 7th and 8th grade SMSG course of study, but carefully edited and presented in a manner compatible with its purpose. Chapter topics include: (1) non-metric geometry; (2) measurement; (3) parallelograms and triangles; (4) constructions and congruent triangles; (5) similar triangles and variation; (6) volumes and surface areas; (7) circles and spheres; and (8) relative error. (MP)