nam a22 7a 4500 28901 28901 170427b xxu||||| |||| 00| 0 eng d 1591581559 (pbk. :alk. paper) LB 1028.5 .T155 2004 Tu, Chih-hsiung Online collaborative learning communities : twenty-one designs to building an online collaborative learning community / Chih-hsiung Tu West Port, CT : Libraries Unlimited, c2004 xiii, 140p. ; 24 cm. Includes index. Computer-assisted instruction. Instructional systems Design. Group work in education. Computer conferencing in education. lcc BOOKS LB 1028.5 .T155 2004 0 0 lcc 0 0 MUC MUC GEN 2017-04-27 0 LB 1028.5 .T155 2004 4398 2017-04-27 2017-04-27 BOOKS