Revised to be in accordance with the customs, traditions, beliefs, and practices of the Muslim Filipinos, these social studies units will help secondary-level Filipino students understand world population problems and develop the necessary skills, attitudes, and values that will lead them to make rational decisions about population matters, particularly about family size. The units are organized topically by grade level: Population Growth and Economic Development, first year of high school; Population Issues, second year of high school; Population Changes, third year of high school; and Planning for the Future, fourth year of high school. Students are involved in many different kinds of learning activities. For example, they analyze population trends, conduct and analyze a neighborhood census, analyze case studies, role play, and read and discuss short readings. Unit information provided for each grade level includes theme, concepts, suggested time allotment, unit overview, and an outline of objectives and content. Each unit is comprised of several lessons. Each lesson includes the following information: objectives, content, teaching procedures, learning activities, and a test. Student materials are included in the lessons. (RM)