This curriculum guide is intended for use in an ungraded science program encompassing grades one, two and three in public elementary schools in southwestern North Dakota. Five major units in the biological, physical and earth sciences and in health education are included. In each unit major concepts to be studied are stated. For each concept, activities and "things to do" are enumerated. Lists of films, filmstrips and transparencies as well as reading materials related to each concept are provided for both teacher and students. Names and addresses of publishers and equipment suppliers are provided in the appendix. (BC)