1. American Association for the Advancement of Science. (1989).Project 2061: Science for all Americans: Literacy goals in science, mathematics, and technology. Washington, DC: Author.
2. Andre, T., & Phye, G. (1986). Cognition, learning, and education. In G. Phye & T. Andre (Eds.)Cognitive classroom learning: Understanding, thinking and problem solving (pp. 1–19). Orlando: Academic Press.
3. Champagne, A. B., & Klopfer, L. E. (1981). Problem solving as outcome and method in science teaching: insights from 60 years of experience.School Science and Mathematics, 81(1), 3–8.
4. Champagne, A. B., & Klopfer, L. E. (1977). A sixty year perspective on three issues in science education: I Whose ideas are dominant? II Representation of women III. Reflective thinking and problem solving.Science Education, 61(4), 431–452.
5. Cuban, L. (1982). Persistent instruction: Another look at constancy in the classroom.Phi Delta Kappan Oct. 113–118.