Included in this set of materials is a description of an instructional model for elementary school mathematics, a curriculum guide developed by the elementary school teachers of the California Area School District, scope and sequence guides, and a teachers manual. The instructional model includes the use of pretests, posttests, prerequisites and behaviors as they relate to the idea of flexible grouping in elementary school mathematics. The teachers manual contains materials for each content item described in the curriculum guide as well as lesson plans, worksheets, prerequisites and content behaviors, pupil response sheets, enrichment materials, and individual record sheets. This work was prepared under an ESEA Title III contract. [Not available in hardcopy due to marginal legibility of original document.] (FL)