This guidebook is one in a series of teacher inservice materials. It is an effort to translate the findings of a study of problem-solving instruction in grade 7 into a set of materials that provide teachers with new knowledge about mathematical problem solving, current instructional practices, and recommendations for problem-solving instruction. This booklet was designed to help teachers guide students in work with word problems of the type found routinely in mathematics textbooks. It introduces one way to think about problem solving that teachers may find useful as a framework for organizing instruction. It also suggests exercises, problems, and classroom activities to involve students in problem analysis, a critical stage of problem solving. Types of problems, relative difficulty, and common errors are noted first, followed by a model of problem solving that splits the process into problem-analysis and problem-solution phases. Implications for instruction are discussed. Appendix A contains materials designed to involve students in four problem-analysis skills; for each skill, three to six student activities and a series of exercise questions are given. Appendix B lists whole number and fraction word problems as a resource for developing new activities and exercises. (MNS)