Abstract
Lesson study is a form of classroom inquiry that can facilitate teachers’ continuing professional development. This study aims to explore primary school mathematics teachers’ perspectives about the implementation of the lesson study strategy in teaching mathematics. The sample of this study included 149 primary school mathematics teachers in Riyadh, Saudi Arabia, who were selected by using the purposive sampling. A quantitative questionnaire was sent to the teachers by e-mail or mobile. 149 mathematics teachers responded to the questionnaire; among them, fifteen teachers participated in a qualitative interview. The results indicated that most of the sample members carry out lesson study activities. The percentages of the teachers in the study sample who practice the activities and procedures of the lesson study ranged between 61.7% and 89.9%. The results also indicated that there is a high impact on the professional development of mathematics teachers as a result of their participation in the lesson study strategy as it helps enhance their mathematical and pedagogical knowledge, improve their knowledge of students’ learning process, and influence their views about the lesson study approach.