Providing an Indian Studies field course in natural science, this dissertation includes: a sourcebook of pertinent reference materials; reservation specific sample lesson plans; natural science roadlogs; a syllabus designed to stress natural science processes and to serve as a unifying factor for field work, lecture, and course discussions. Emphasis is on geographical and ecological concepts, climatic and geological processes, and the natural habitats of North Dakota including discussion of North Dakota vertebrates and early man and his environment, geologic features and history, vegetation and animal life of each of the four North Dakota American Indian reservations. The following processes are identified as being used in the development of the syllabus and sourcebook: research and experimentation in teaching methods; design and implementation of a natural science field course based upon the syllabus; field observations of North Dakota geology and biology; interviews with resource persons on the various syllabus topics; and a study of pertinent literature. Maintaining that American Indians identify strongly with natural science concepts because their cultures have traditionally reflected the inter-relationship between man and nature and man's dependency upon nature, this thesis presents extensive information relative to the Turtle Mountain, Fort Berthold, Devils Lake Sioux, and Standing Rock Sioux Indian reservations. (Author/JC)