This booklet on environmental decisions is one of a series in environmental education for grades K-12. The activities contained in this booklet are designed to identify components of complex decision making and to develop the idea of responsibility for decisions. Six basic concepts are listed, along with the behavioral objectives, subject areas, key words, and definitions associated with each. Three activity options are given for each concept. Information for these activities includes materials and resources, procedures, discussion questions, further activities, and sample worksheets. The activities are interdisciplinary and designed for students in grades 6-8. (MA)