This teaching guide contains 20 activities on population growth for students in grades 6-12. The purpose is to help students gain the skills, knowledge, and understanding of population dynamics so that they can make rational decisions and take responsible action regarding population matters and public policy. Activities are organized around the population dynamics of growth, size, density, and distribution as well as demography. Each activity is based on an assumption. For example, "World Population Data Sheet" proves that the earth's human population is distributed unevenly over the earth's surface. Other assumptions are: the earth is a finite system; population is a group of organisms limited in time and space; specific factors determine the size and makeup of a population; desired population size depends on people's wants and expectations; world population is growing rapidly because of a reduction in the death rate; organisms need specific external resources to support life and they require space; and population is a major factor in human/environmental interactions. Each activity contains an introduction and a list of objectives. It includes information about grade level, time required, and materials needed. The procedure to follow is explained and ideas are given to evaluate the performance of students. There are handout and supplementary materials. A pretest/posttest is provided. (Author/NE)