An ecological approach involved making conscious decisions which result in actions that responsibly contribute to the long-term stewardship of natural resources. This activity and resource guide was designed for use by both educators and resource managers to supplement existing courses and programs concerning ecological matters. These interdisciplinary activities cover such subjects as social studies, drama, language arts, geography, history, math, physical education, and science in addition to environmental education. The activities are organized by age group-grades K-3 (13 activities), grades 4-5 (20 activities), grades 6-8 (25 activities), and grades 9-12 (13 activities--but are scattered throughout the guide without regard to age level. The preface describes a new way of looking at the earth and its natural resources called Ecosystem Management; the introduction defines ecosystems and ecosystem management; and the users guide gives tips for sampling activities. Each activity is accompanied by a sidebar containing the following information: (1) Age level; (2) Process; (3) Objectives; (4) Timeframe; (5) Skills; (6) Materials; and (7) Vocabulary. Sample activities include "Career Critters" (K-3), which introduces the concept that wild animals can manage some human-induced environmental problems, and "The Long and Winding Road" (grades 4-12), in which students examine various societal values related to archaeological resources such as Stonehenge. Contains a glossary of 175 words. (PVD)