1. Alessi, S. M., & Trollip, S. R. (1991). Computer-Based Instruction: Methods and Development (2nd Edition). Englewood Cliffs: Prentice-Hall.
2. Barnes, D., & Todd, F. (1977). Communication and learning in small groups. Boston: Routledge.
3. Teachers and Students: Constructivists Forging Connections.;J.Brooks;Educational Leadership,1990
4. Bruner, J. S., Goodnow, J. J., & Austin, G. A. (1956). A study of thinking. New York: Science Editions.
5. Cazden, C. B. (1988). Classroom discourse: The language of teaching and learning. Portsmouth, NH: Heinneman.