1. Alatorre, S., & Saiz, M. (2008). Mexican primary school teachers’ misconceptions on decimal numbers. Proceedings of PME 32, 2, 25–32.
2. Alatorre, S., Mendiola, E., Moreno, F., Sáiz, M., & Torres, R. (2011). How teachers confront fractions. Proceedings of PME 35, 2, 17–24.
3. Amato, S. A. (2006). Improving student teachers’ understanding of fractions. Proceedings of PME 30, 2, 41–48.
4. Amato, S. A. (2009). Improving elementary student teachers’ knowledge of multiplication of rational numbers. Proceedings of PME 33, 2, 41–48.
5. Amato, S. A. (2011). Ratio: A neglected division at schools. Proceedings of PME 35, 2, 25–32.