4Roskos K. et al. Design of online teacher professional development in a statewide Reading First professional development system [J]. Internet and Higher Education, 2007, 10: 173--183.
5Harlen, W., & Doubler, S. Online professional development : Science inquiry in the online environment [J]. International Journal of Science Education, 2004, 26: 1247--1267.
6Bonk, C. E- learning in college and corporate Settings: The present state and beyond. In P. Kommers & G. Richards (Eds.), Proceedings of World Conference on Educational Multimedia, Hypermedia and Telecommunications [M ]. Chesapeake: AACE. 2002. 182--184.
8Knowles, M. S. Self--directed learning: A guide for learners and teachers [M]. Prentice Hall, Englewood Cliffs, New Jersey. 1975. 46.
9MeCombs, B. L., & Vakili, D. A learner- centered framework for e-- learning [J]. Teachers College Record. 2005, 107: 1582--1600.
10Committee on Enhancing Professional Development for Teachers, National Academies Teacher Advisory Council, Center for Education. Enhancing Professional Development for Teachers: Potential Uses of Information Technology, Report of a Workshop [M ]. National Research Council. Washington, D. C. 2007, 10, 16.
