Designed to help upper elementary school teachers prepare for a class expedition to Yellowstone National Park, this workbook presents environmental learning activities that are also useful in schools too distant for an actual visit. Either way, the workbook aims to develop student appreciation of Yellowstone, the life in it, and the park's value as a milestone in mankind's relationship with the land. Four theme chapters cover (1) the geologic history of the park; (2) the diversity of plant and animal life in Yellowstone; (3) the influences of Yellowstone's life and landscape on human affairs from prehistoric to contemporary times; and (4) Yellowstone as the birthplace of the national park idea. Theme chapters contain information, vocabulary, class activities, and discussion questions relating to one or more stories in a separate storybook, "Expedition Yellowstone: A Mountain Adventure" by Sandra Chisholm Robinson. Written specifically to be used with this workbook, the storybook is a fictional account of the natural and human history of Yellowstone as seen by a mountain man and his descendants. Class activities to be done before, during, and after the trip include scientific and mathematical investigations and demonstrations, art and writing projects, games and puzzles, story telling and drama, and social studies assignments. Other chapters contain information on park facilities and services for school groups, suggestions to teachers about using workbook materials, and evaluation activities and forms. (SV)