Guidelines that were prepared for use in curriculum development efforts by schools and districts throughout the state of Washington are presented in this document. The philosophy of mathematics education reflected in these guidelines is presented, as are a discussion of areas to be addressed if needed improvements in the K-8 mathematics program are to be made, and material related to six mathematics content strands. These strands are: (1) problem-solving; (2) measurement; (3) geometry; (4) number properties, theory, and computation; (5) probability and statistics; and (6) algebra. Each strand consists of introductory comments (which provide information on scope and sequence, the relative importance of instructional emphasis, and classroom implementation concerns) and a listing of learning results (objectives) and their corresponding instructional implications. These results and implications are organized by grade levels (grades K-3, grades 4-6, and grades 7-8) within each strand. A bibliography of selected instructional resources, compiled from materials that the curriculum writing team found useful in their own classroom experiences, is provided at the end of each set of learning results and instructional implications. (JN)