This guide features Aldo Leopold's land ethic woven into a series of activities that also represent the five core issues of most concern to the National Wildlife Federation (NWF): (1) wetlands; (2) water quality; (3) land stewardship; (4) endangered habitats; and (5) sustainable communities. Each activity is introduced by a biographical sketch of a Steward of the Earth--a person or group who has embraced the land ethic through action. The biography is followed by background information for the activity, procedure, and reflective writing suggestions. Each activity lists a learning objective, grade level, materials and time required, curriculum links, and resources. Activities cover such issues as habitats for buffalo, mangrove trees and salt-water wetlands, pollutants and frog deformities, and succession in the forest. Students participate in and understand the methods of scientific study through on-site activities. This guidebook also contains a glossary, resource lists, and a teacher questionnaire. (PVD)