7Xiaodong Lin & Bransford, J. Instructional Design and Development of learning Communities: An Invitation to a Dialogue[J].Educational Technology, 1995,35 ( 11 - 12 ) : 54.
8Gilbert, N.& Driscoll, M. Collaborative knowledge building: a case study[J]. ETR&D,2002,50(2):59.
9Lin Xiaodong & Bransford, J. Instructional Design and Development of learning Communities: An Invitation to a Dialogue[J].E-ducational Technology, 1995,35(11-12) :55-58.