- Designing for change in networked learning environments: proceedings of the International Conference on Computer Support for Collaborative Learning 2003, page 293 – 302. (2003)
- International Journal of Computers for Mathematical Learning 9(3):309--326 (2004)
- The Cambridge Handbook of Consciousness, Cambridge University Press, The Edinburgh Building, Cambridge CB2 8RU, UK, (2007)
- Educational Studies in Mathematics 65(3):367-384 (2007)
- Educational Studies in Mathematics 33(2):203-233 (1997)
- Social Studies of Science 36(1):39-68 (February 2006)
- Kluwer Academic, Dordrecht, (June 1996)
- NeuroImage (2004)
- Psychological Science 15(1):1-7 (2004)
- Educational Studies in Mathematics 46(1):273-286 (2001)
- Education Researcher 18(1):32-42 (1989)
- page 765-800. Elsevier, London, (2006)
- Journal of Educational Computing Research (2002)
- Constructionism, Ablex, Norwood, NJ, (1991)
- Educational Studies in Mathematics (1999)
- Cambridge University Press, New York, Port Chester, Melbourne, Sydney, (1991)
- Adaptive Behavior 11(2):79-96 (2003)
- (in press)
- Cognitive Science 28(4):611-619 (2004)
- Behavioural Brain Research (1999)


user