1. Abrantes, P. (1993). Project work in school mathematics. In J. De Lange et al. (Eds.), Innovation in maths education by modelling and applications (pp. 355–364). Chichester: Horwood.
2. Aebli, H. (1985). Zwölf Grundformen des Lehrens. Stuttgart: Klett-Cotta.
3. Alsina, C. (2007). Less chalk, less words, less symbols … More objects, more context, more actions. In W. Blum et al. (Eds.), Modelling and applications in mathematics education (pp. 35–44). New York: Springer.
4. Antonius, S., et al. (2007). Classroom activities and the teacher. In W. Blum et al. (Eds.), Modelling and applications in mathematics education (pp. 295–308). New York: Springer.
5. Baruk, S. (1985). L‘age du capitaine. De l‘erreur en mathematiques. Paris: Seuil.