This study aims to describe the implementation of pedagogical content knowledge (PCK) of mathematics teachers in the teaching practice of the material system of linear equations of two variables (SLETV). The approach used is a qualitative case study. The main instrument is the researchers themselves and the supporting instruments is a vignette…

Various methods of teaching had been implemented to create an active and fun teaching process by teachers for students. Teachers' actions during class could lead to different responses from students. However, those actions are not always well accepted by students. Valsiner suggested a theory on a set of teachers' actions for promoting students'…

The aim of this study is to describe the mathematical thinking process of autistic students in terms of gesture, using a qualitative approach. Data collecting is conducted by using 3 (three) audio-visual cameras. During the learning process, both teacher and students' activity are recorded using handy cam and digital camera (full HD capacity).…