1. Aitken, R. & Deaker, L. (2008). Creating the conditions for constructivist learning, 33rd International Conference on Improving University Teaching Transforming Higher Education Teaching and Learning in the 21st Century, July 29- August 1, Glasgow, Scotland.
2. Encyclopedia of Materials Characterisation;Brundle,1992
3. Introduction to cognitive task analysis;Chipman,2000
4. Dalgarno, B. (2002). The Potential of 3D Virtual Learning Environments: A Constructivist Analysis. Electronic Journal of Instructional Science and Technology, 5(2). Available: http://www.usq.edu.au/electpub/e-jist/docs/Vol5_No2/Vol5_No2_full_papers.html. http://eduscapes.com/tap/topic73.htm.