Reported is an assessment of a competency-based physics course designed to develop concepts through an activity-centered approach incorporating the processes of science. It was assumed that such a strategy would enhance a future teacher's understanding of science concepts and processes in addition to developing more positive attitudes toward science. The course is described as different from other available courses in three aspects. First, a philosophy of teaching elementary science was considered during development. Second, course content was selected according to the particular needs of elementary teachers. Preference was given to topics which were considered to honestly reflect the content of the discipline and still possess application value for teachers. Third, instruction incorporated competency-based strategies. Terminal objectives were explicitly stated at the beginning of each topic; a self-paced modular format allowed for individual differences in achieving and demonstrating competence. Course content, student evaluation, course evaluation, as well as changes in the understanding of science concepts and processes are presented. (Author/EB)