Bernhard Ertl, Birgitta Kopp, Heinz Mandl. Supporting Learners Collaborative Knowledge Construction by External Representations. In Maria Cristina Matteucci, Andrea Omicini, Elena Nardini, Pietro Gaffuri, editors, Proceedings of the Conference Knowledge Construction in E-learning Context: CSCL, ODL, ICT and SNA in education (2008), Cesena, Italy, September 1-2, 2008. Volume 398 of CEUR Workshop Proceedings, CEUR-WS.org, 2008. [doi]
Abstract is missing.