The unit supplement provides skill development activities for high school students in mass media techniques. It is intended to be used with a social studies curriculum unit entitled "Unit on Political Decision Making and Action Strategy Over a Local Environmental Problem," (ED 118 526). Teacher directions for using the supplement as a single unit of instruction or in conjunction with an interdisciplinary program are included in the text. The student is directed to select a local problem from a list of general environmental political problems and plan and execute a media presentation for the class. Suggested group and individual activities involving slide-tape techniques, photo-journalism, sound motion pictures, and audiotape are described. Lesson I describes teacher responsibilities in providing background reading and speakers. Lesson II presents a research guide and group project suggestions for use by students in their initial investigation of the selected environmental concern. Lesson III presents four guide questions for use by students in further narrowing their topic. Lesson IV describes instruction and reading selections in the suggested media. Lesson V discusses procedures for presentation and evaluation of student projects. An evaluation outline and student instruction sheets on suggested media are included in the appendix. (Author/DB)