1. How to set problems before giving answers: An experimentation in a mathematics course at the University of Grenoble;Ailbert,1988
2. Mathematics framework for California public schools, kindergarten through grade 12;California Department of Education,1992
3. Mathematics, insight, and meaning;de Lange,1987
4. Number sense as situated knowing in a conceptual domain;Greeno;Journal For Research In Mathematics Education,1991
5. Thinking mathematically;Mason,1985