?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Lee%2C+Ya+Ling&rft.aulast=Lee&rft.aufirst=Ya+Ling&rft.date=25+November+2005&rft.title=Integrating+constructivist+approaches+in+e-learning+to+enhance+mathematical+self-study&rft.genre=proceeding