A source of ideas and direction for follow-up to the Multnomah County Outdoor School program, the guide identifies concepts generally common to all outdoor school sites from year to year: the water cycle; watershed; water as a habitat for plants and animals, an oxygen supplier, and a producer of usable power; sun energy; plants as producers and decomposers in the ecosystem; plants' economic value; conservation, preservation and utilization of the plant resource; sunlight, soil, and moisture; plant succession and classification; animal populations and habitats; introduction or removal of a species from a habitat; energy pyramid and cycle; factors affecting soil; soil composition; man's effect on erosion and wildlife; soil minerals and nutrients; and soil as a renewable resource. How each concept can be understood both at and after the outdoor school is briefly discussed. Each concept is followed by a section listing goals, key words, films, and review discussion topics and questions which can be used after returning to the community to link the outdoor school with the students' home environment. Activities, experiments, comparisons, and observations which can be accomplished in the school environment are suggested. The guide concludes with 30 questions commonly used to measure environmental impact on a "sophisticated and professional" level. (NQA)