A large body of research has shown the effectiveness of formative assessment on student learning. Yet research on teachers' implementation of formative assessment is relatively underdeveloped. In addition, there has been a lack of effective instruments for observing teachers' formative assessment practices. This study focuses on the ongoing…

Since problem solving became one of the foci of mathematics education, numerous studies have been performed to improve its teaching, develop students' higher-level skills, and evaluate its learning. While these studies usually study specific aspects of problem solving, further research is needed to understand how to address problem solving from a…

This study introduces "teachers' collaboration" as an approach to teachers' professional development geared at enhancing science and mathematics teaching in Tanzania secondary schools. Teachers' professional development through teachers' collaboration has been reported to be effective for the improvement of schools' performance and…