The environment encompasses all of the external and internal stimuli that affect people in their daily lives. How they are interpreted and how people react are as varied as the stimuli themselves. One of the major objectives of environmental education is to form positive reactions and attitudes toward the environment. The concepts and basic principles concerning the workings of the environment can be taught in backyards, vacant lots, off-campus field sites, or on the school campus. Since most children relate best to familiar areas, the school grounds are ideal for teaching environmental activities. This booklet presents a variety of environmentally oriented activities that can be used on school campus sites. Most of the activities are interdisciplinary and lend themselves to this type of teaching. The activities in this guide are cross referenced according to two separate systems: by discipline area and by topic and subject. Over 300 activities are suggested in this guide. (CW)