GRADES OR AGES: K-6. SUBJECT MATTER: Mathematics. ORGANIZATION AND PHYSICAL APPEARANCE: Although the content is divided into seven skill levels, variations may be made in their use and two topics may be taught simultaneously. Each level is organized in two parts, the first having columns showing activities with examples, textual resources; and related resources, the second containing tests and answer keys. The guide is xeroxed and spiral-bound with a plastic binder. OBJECTIVES AND ACTIVITIES: No specific objectives are given for each level. INSTRUCTIONAL MATERIALS: References are provided throughout the guide to relevant Houghton Mifflin materials, with a column for the teacher to note other suitable material. STUDENT ASSESSMENT: Tests are provided for each level to measure the mastery of single skills or a number of related skills. The use of these tests is explained in the strategy manual at the beginning of the guide. (MBM)