This activity book was written for the purposes of: (1) increasing students' awareness of nature and environmental issues; (2) providing an interdisciplinary curriculum for environmental issues; (3) encouraging students to use a variety of current nonfiction sources to research activities; and (4) encouraging students to work together in small groups. Each of 20 units corresponds to one environmental topic. Topics include the Earth, the atmosphere, water, energy, seas and oceans, islands and coral reefs, the seashore, ponds and wetlands, rivers and lakes, rainforests, forests and woodlands, mountains, grasslands, deserts, polar regions, urban environments, food and farming, waste and recycling, endangered species and habitats, and environmental awareness. Each unit provides seven activities within the subject areas of library skills, arts and crafts, spelling and vocabulary, geography, math, music and theater arts, English composition, science, history and sociology, and topics for discussion. Suggested resources, additional reading lists, and a list of addresses to write to for further information conclude each unit. (LZ)