1Jonassen, D. Objectivism vs. Constructivism. Educational Technology Research and Development, 1991, 39(3), 5 - 14.
2Fosnot, C Constructivism: Theory, perspectives, and practice. New York: Teachers College Press, 1996. 8 - 33.
3von Glasersfeld, E. Constructivism in education. New Jersey: Lawrence Erlbaum Associates, Inc., 1995.3 - 16.
4Mayer, R. Learners as information processors: Legacies and limitations of educational psychology's second metaphor. Ed ucational Psychologist, 1996. 31(3/4), 151 - 161.
5Brown, J S, Collins, A & Duguid, S. Situated cognitionand the culture of learning. Educational Researcher, 1989, 18(1), 32-42.
6von Glasersfeld, E. The Invented Reality. New York: W W Norton & Company, 1984.24 - 36.