1. Teaching withinclass groups: Examining the role of the teacher;Anderson;Journal of Classroom Interaction,1988
2. Toward a solution of the learning paradox;Bereiter;Review of Educational Research,1985
3. Conflict, arousal, and curiosity;Berlyne,1960
4. The crucial role of the didactic contract in the analysis and construction of situations in teaching and learning mathematics;Brousseau,1984
5. Mathematical fallacies and paradoxes;Bunch,1982