Resumen

Our research focuses on Mathematics Teacher Educatorspecialized knowledge. By means theoretical tools driven from Mathematics Teacher Specialized Knowledge model (MTSK model) we focus on teacher educators’ specialized knowledge and carry out a qualitative study in order to identify specific dimensions and domains of mathematics teacher educators’ specialized knowledge. We explore an extension of the MTSK model that can characterize the teacher educator’s specialized knowledge (Mathematics Teacher Educator Specialized Knowledge model) -MTESK model. Specifically,our focus will be on the Pedagogical Content Knowledge of the MTESK model.