Capturing PCK requires a combination of approaches that can collect information about what teachers know, what they believe, what they do and the reasons for their actions (Baxter & Lederman, 1999). Therefore, in this study we used different ways to collect data. (1) In the interview before the PCK test-lessons, the teachers were interviewed about their overall intentions for their lesson, what they wanted their students to learn, what instructional strategies they intended to use and for what reason,