- ZDM 37(4):287--307 (2005)
- Journal for Research in Mathematics Education 19(2):99-114 (1988)
- Educational Research for Policy and Practice 3(2):95--107 (2004)
- Journal of Curriculum Studies 31(4):399--427 (1999)
- Kluwer Academic Publishers, Dordrecht, (1988)
- page 187--221. Lawrence Erlbaum, Mahwah, N.J., (2006)
- (2006)
- Realistic mathematics education in primary school (1991)
- International Journal of Mathematical Education in Science and Technology 31(2):161--172 (2000)
- CD-ß Press, Center for science and mathematics education, (1996)
- Springer, (1991)
- (2003)
- The Journal for Research in Mathemtics Education 36(3):176–247 (2005)
- Proceedings of 21st Conference of PME-NA, page 23-44. Columbus, Ohio, Clearing House for Science, mathematics, and Environmental Education, (2001)
- Trends in Cognitive Sciences 9(1):6-10 (2005)
- International Journal of Computers for Mathematical Learning 12(1):3-21 (2007)
- Educational Studies in Mathematics 46(1):1-12 (2001)
- Journal for Research in Mathematics Education 34(2):137-167 (2003)
- Klett-Cotta, (1978)
- page 639--656. New York: Macmillan, (1990)


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