5Jesse James Garrett. AJAX: A New Approach to Web Applications [EB/OL]. http: /www. adaptivepath. com/publications/essays/archives/000385, php. 2005-2-18.
3Michael Moore. Three types of interaction [DB/OL].http://cdl.panam.edu/dayoung/professional/moorethreetypesofinteraction.htm.
4Hillman,D C ,Willis,D J ,& Gunawardena,C N Learner- interface interaction in distance education: An extension of contemporary models and strategies for practitioners[J]. The American Journal of Distance Education, 1994,(2):30-42.
5Wagner, E D In support of a functional definition of interaction[J].The American Journal of Distance Education, 1994,(2): 6-29.
6Hank Payne, Ph. D. A Review of The Literature: Interactive Video Teletraining in Distance Learning Courses, United States Distance Leaming Association.
7Shu- Sheng Liaw. Enhancing Interactivity in WebBased Instruction: A Review of the Literature. Educational Technology, May - June 2000.
8Kim Flottemesch. Building Effective Interaction Distance Education: A Review of the Literature. Educational Technology, May- June 2000.
9Berge, Z. L. Interaction in Post- Secondary Webbased Learning.