In this study, we aimed at demonstrating the power of Variation Theory in exploring the local situation of Indonesian teachers and Teacher Professional Development program. The projection of Variation theory regarding the enterprise of teaching results on the need of sensitivity of students and exemplary teaching strategy that differ with teachers…

This study examined how types of tasks influenced student activities/thinking and defined the role of Seatwork in mathematics lessons. It used 60 lessons from the TIMSS videotaped Study. These data indicated that practice was the most prevalent form of tasks in the U.S. In Germany, students completed mathematical calculations after a complex…

Beyond common associated factors, such as teacher characteristics and socioeconomic background of students, little is known about how student achievement relates to differences in the pedagogical approaches used in Latin American classrooms. This paper highlights the main findings from a qualitative study on cross-country differences in teaching…