- CHI, page 310-317. ACM, (1999)
- J. Comp. Assisted Learning 19(2):145-148 (2003)
- ICCE, page 19-22. (2002)
- CSCL, page 737-738. International Society of the Learning Sciences, (2002)
- Educational Technology & Society 12(3):289-308 (2009)
- CSCL 2, page 8. International Society of the Learning Sciences, (2009)
- COGNITIVE SCIENCE RESEARCH PAPER-UNIVERSITY OF SUSSEX CSRP (2005)
- Routledge, (2010)
- Computers & Education 50(2):449-462 (2008)
- Intelligent Tutoring Systems, volume 3220 of Lecture Notes in Computer Science, page 98-107. Springer, (2004)
- Intelligent Tutoring Systems, volume 3220 of Lecture Notes in Computer Science, page 908. Springer, (2004)
- Supplementary Proceedings of the 13th International Conference of Artificial Intelligence in Education. Marina del Rey, CA. USA. July 2007, (2007)
- Intelligent Tutoring Systems, volume 2363 of Lecture Notes in Computer Science, page 759-771. Springer, (2002)
- Intelligent Tutoring Systems, volume 2363 of Lecture Notes in Computer Science, page 995. Springer, (2002)
- Intelligent Tutoring Systems, volume 2363 of Lecture Notes in Computer Science, page 1012. Springer, (2002)
- Cognitive Technology, volume 2117 of Lecture Notes in Computer Science, page 289-300. Springer, (2001)
- AIME, volume 2101 of Lecture Notes in Computer Science, page 55-58. Springer, (2001)
- Intelligent Tutoring Systems, volume 1452 of Lecture Notes in Computer Science, page 304-313. Springer, (1998)
- AIED, volume 6738 of Lecture Notes in Computer Science, page 432-434. Springer, (2011)
- (2000)


author