Presented is an environmental approach to elementary school science teaching. The inquiry approach is stressed and outdoor activities are integrated with classroom activities. A variety of curricular materials were developed to be used in conjunction with the New York State Elementary Science Curriculum. The project also provided workshops for teachers and supervisors, classroom demonstration lessons, identification of resources around the schools, camp programs, sanctuary programs, newsletters, a "sight and sound" program for junior high school students, and workshops for community groups. Formal evaluation focused on an intensive workshop for urban teachers given through one academic year. Comparison of classroom behavior of the teachers before and after the workshop indicated that they learned to make greater use of outdoor resources, and other observations indicated the attainment of other objectives of the program. Workshops, including some for preservice teachers, and other project activities are described and evaluated in less detail. The phasing out of the project is discussed and recommendations are made for similar projects in terms of staffing, program scope, selection of teachers for workshops, and evaluation. This work was prepared under an ESEA Title III contract. (EB)