1. Introduction In this research project, a group of teachers developed their research capability through their investigation of the use of questioning to facilitate students’ learning in mathematics. Eight teacher researchers worked in partnership with two research team leaders to analyse their own practice in order to identify aspects of questioning behaviour. During this one-year project, the teacher researchers had significant input into the shape and direction of the research. It was intended that this research project would build understanding by adding the teachers’ perspectives of the strengths and weaknesses of current pedagogical practice to the existing body of research. The project was closely aligned with the following principles of the