user- What interesting responses did you receive to your sequences or comments? Why did you find them interesting? I don´t receive any comments to my sequance, ...What interesting responses did you receive to your sequences or comments? Why did you find them interesting? I don´t receive any comments to my sequance, because is to easy...
- History and Education in Mathematics and Informatics, Attracting Talent to Science; Proceedings of the International Congress MASSEE 2003, september 15-21, Borovets, Bulgaria, University of Latvia, Latvia, (2003)
- The 10th Computer Supported Collaborative Learning CSCL conference 2005, page 450 - 459. Taipei, Taiwan, Lawrence Erlbaum Associates, (2006)
- proceedings of the 1st CSCL SIG Symposium, Lausanne, Switzerland, (2004)
- the International Journal for Technology in Mathematics Education 13(2):65-78 (2006)
- the 7th International Conference on Technology in Mathematics Teaching, Bristol, (2005)
- Fourth Congress of the European Society for Research in Mathematics Education CERME-4, Sant Feliu de Guíxols, Spain, (2005)
- International Journal of Continuing Engineering Education and Life-Long Learning IJCEELL 18(2):214-233 (2008)
- Micromath 20(2):17-23 (2004)
- Technology-Enhanced Learning, Springer, (2009)
- Proceedings of the 27th International Conference for the Psychology of Mathematics Education, Honolulu, HI, (2003)
- Educational Studies in Mathematics 22(1):411-437 (1991)
- Journal of Computer Assisted Learning 7(4):210--228 (1991)
- Approaches to Algebra: Perspectives for Research and Teaching, Kluwer Academic Publishers, Dordrecht, (1996)
