4Jonassen. Marra, R. & D Jonassen. Whither Constructivism[ M ].Englewood: Libraries Unlimited Ine, 1992.
5Piaget, J. The Principles of Genetic Epistemology[ M]. London:Routledge & Kegan Paul Lid, 1972.
6Vygotsky, L S. Mind in Society[ M ].Cambridge: Harvard Univemity Press, 1978.
7M. S. Wittrock. Handbook on Research on Teaching[ M ]. New York; Macmillan, 1988.
8Driver, R. Theory into Practice: A Constructivist Approach to Curriculum Development [A]. In P. Fensham(ed. ). Development and Dilemmas in Science Education. London: Falmer Press, 1998.
9Hatano, G. Time to Merge Vygotskian and Constructivist Conception of Knowledge Acquisition [ A]. In Forman, E. A., Minick, N. & Stone,C. A. ( eds. ) . Contexts for Learning: Socialcultural Dynamics in Children's Development (pp.153- 166). Oxford: Oxford University Press,1993.
10Jonassen, D. et al.. Constructivism and Computer-Mediated Communication in Distance Education [J]. The American Journal of Distance Education, 1995 (2).
