1. The challenge of practical work in an eUniversity—real, virtual and remote experiments;Cooper;Proc. IST2000 The Information Society for All, Nice- France,2000
2. DISinHE (1999). Guidelines for accessible courseware. Available: http://www.disinhe.ac.uk/library/article.asp?id=24.
3. Equal Access to Software and Information (1995). EASI Street to Science, Engineering and Mathematics: access for people with disabilities. Available: http://www.rit.edu/∼easi/easisem/semintro.htm.
4. Freake, S., Colwell, C., & Di Paolo, T. (2000). PEARL deliverable 3.3: curriculum review and institutional issues report. PEARL project public deliverable. Available: http://kmi.open.ac.uk/projects/pearl/publications/.
5. The effect of instruction using student's prior knowledge and conceptual change categories on science learning;Hewson;Journal of Research on Science Teaching,1983