1. Beyer, B. K. (1988).Developing a thinking skills program. Boston: Allyn & Bacon.
2. Blosser, P. E. (1988). Teaching problem solving-Secondary school science.ERIC/SMEAC Science Education Digest, 2. (ERIC Document Reproduction Service No. ED 309 049).
3. Cazden, C. B. (1988).Classroom discourse: The language of teaching and learning. Portsmouth, NH: Heinemann.
4. Chin, C. C., Goh, N. K., Chia, L. S., Lee, K. W., & Soh, K. C. (1994, July).Pre-service teachers' use of problem-solving in primary science teaching. Paper presented at the annual conference of the Australasian Science Education Research Association, Hobart, Tasmania.
5. Claxton, G. (1990).Teaching to learn: A direction for education. London: Cassell.