http://www.isls.org/cscl2011/ CSCL 2011 is the ninth international CSCL conference and will be held in Hong Kong on July 4-8, 2011. The conference is co-organised by the International Society of the Learning Sciences (ISLS) and Centre for Information Technology in Education of The University of Hong Kong. CSCL conference is a major international event that gathers together people involved in all aspects of the field of technology-based collaborative learning, including research, education, training and technology. It focuses on issues related to formal and informal learning through collaboration, as the CSCL community is interested not only in tools, but also in identifying the actual educational and professional practices that are associated with their appropriate usages. It includes a lively mix of keynotes, submitted paper sessions, submitted and invited symposia, workshops, panels, educational showcases, interactive events, posters sessions, demos and exhibitions, covering timely and important issues of interest to the community and reporting recent research findings. CSCL 2011 invites participation from experienced as well as early career researchers, designers, educators, industrial trainers from various disciplines including education, cognitive, social and educational psychology, didactics, subject matter specialities, computer science, linguistics and semiotics, speech communication, anthropology, sociology, design, etc.