This guide contains materials designed to assist teachers and students in home economics related courses with mastery of job-related mathematics, science, and behavioral science. The 40 Power Pacs are divided into mathematics (16 Power Pacs), science (15), and behavioral science (9). Each Power Pac contains teacher materials and student materials. Each one begins with an information sheet to refresh the teacher's knowledge about the concept. A lesson plan for related class time briefly outlines objectives, teaching aids, steps to prepare the learner for the topic, suggested class presentation with activities and introductory experiments, assignments to provide application experiences, information sheets for students, skill builders (worksheets) and answers, and a sample evaluation. Lessons have no timeframe and may require one day or one week to cover. The table of contents also categorizes Power Pacs by home economics related occupations: child care service, community/home service, fabric service, and food service. Representative topics of Power Pacs include computing yardage (of fabric), measuring liquids, altering recipes, making change, controlling contamination, leavening, maintaining sanitary conditions, safety, nutrition, effective communication, listening, positive reinforcement in the preschool, safety in the preschool, and psychology in patient care. (YLB)