Arithmetic Teacher (1993-1994) Vol. 41, No. 9
I ntroducing In vestigations: a refreshing new math program that can serve as a complete elementary curriculum, or as replacement units in key topic areas. Grades 3 and 4 are now available! I nvestigations is a researchbassed classroom-tested program designed to give students in-depth mathematical understanding-and to
This is available to members of NCTM. Please log in now to view this article. If you are interested in a NCTM membership join now.