The creation and use of school-made audiovisual teaching aids that emphasize ecological principles are presented to help secondary students and teachers develop curriculum in environmental education. The specific resources include motion pictures, photographs, videotape, sound recordings, and multimedia presentations. The main emphasis of the paper is on the cooperative production of these materials by students and teachers together, and the use of them to foster personal and environmental perception. After producing visual and sound presentations, students are aware of controls they can exert over certain aspects of their environment and simultaneously become part of the technological revolution. The materials developed offer a multidisciplinary approach to environmental education and can benefit and be of interest to the rest of the school population and the community. The interpretation and evaluation of the developed materials allow students to decide the environmental issues themselves in the face of the overwhelming barrage of contradictory information. A bibliography of resources available for the creation of classroom, developed audiovisual materials is included. (Author/JR)