The health of man's environment is vital to the well being of this and future generations; yet, abuses threaten both the natural and man-made environments. This document explores the total scope of this problem. The prime purpose of this guide is to give administrators, curriculum people, teachers, and interested citizens a statement of what might be considered essential in developing environmentally literate citizens who will be able to make decisions and choices as producers, consumers, voters, and recreationalists that will sustain a liveable environment. The responsibility for developing such citizens is seen as a function of public education. It is felt that this can readily be interwoven into the curriculum without any major content changes. A list of 179 basic ideas and concepts relevant to environment that could be taught in the areas of natural science, social science, and humanities is given. In addition, 10 processes for the effective teaching of these concepts is presented. This guide was developed by the Liberty Council Conservation Education Center under Elementary and Secondary Education Act, Title III, funds. (DB)