Five simulations for addressing science-related social issues in either the secondary science or social studies classroom are presented. Following a foreword, introduction, and description of the conceptual basis for the activities, each of the activities is presented in its entirety. Complete teacher and student materials for conducting each of the following simulations is presented: storage of spent nuclear fuel, control of recombinant DNA, the acid rain controversy, toxic waste controls, and the controversy over seabed mining. Each simulation follows a standard format emphasizing student skills of information processing, problem solving and group decision making. Students are divided into groups representing a decision-making body and pro, con, and compromise positions on a given issue. Students research their position using provided data and library resources, ultimately using their findings to support their group's position in a simulated public or agency hearing on the subject. Each activity contains step-by-step instructions and student handouts. Each simulation takes approximately two weeks. (LP)