CERME7 Working group 17: From a study of teaching practices to issues in teacher education.

Information about several papers discussed at the Seventh Congress of the European Society for Research in Mathematics Education (CERME 7) held February 9-13, 2011 in Poland on mathematical content knowledge needed for teaching (MCKT) is presented. Topics include the lesson study research, the problem solving-oriented approach, and an inquiry-based approach to mathematics. The evolution of teachers' beliefs and practices in collaboration with researchers over the long term is also tackled.