1. Biological Sciences Curriculum Study (1968). Biological science: An ecological approach. Chicago: Rand McNally.
2. (1976). Human characteristics of learning. New York: McGraw Hill.
3. (1971). Time span of discretion in the high school occupational currcula. Berkeley, California: The Wright Institute.
4. Popper's epistemology as a pedagogic and didactic principle, or: Let them make more "mistakes."
5. (1970). Evaluation of instruction and Changing Education Models. In & (Eds.) The evaluation of instruction: Issues and problems, New York: Holt, Rinehart, & Winston.