ABSTRACT
Material from this chapter was first published at the Interactive ComputerAided Blended Learning 2007 conference in Florianopolis, Brazil. D. Johnson and I.M. Bhana were with the School of Systems Engineering, The University of Reading, Reading, RG6 6BX UK. D. Johnson is now with the Department of Computer Science, University of Oxford, United Kingdom, and I.M. Bhana with KIT Digital, Inc.
