The Necessity of Enhancing Teachers’ Cooperation in Developing Textbooks Content

This paper aimed to evaluate a project entitled “Enhancing Knowledge and Skills of Mathematics Teachers in Developing Mathematics Textbooks Content.” The research was fulfilled through a design-based research method, in which mathematics teachers and curriculum developers collaborated in groups to develop a mathematics course pack. The statistical population of this study was 284 official mathematics teachers of the Secondary schools of Isfahan. Among them, 21 teachers were selected in a targeted sampling method, criterion-based type, to participate in content development workshops. The produced content for the student and the teacher's guide was evaluated by two researcher-made questionnaires. The validity of the instruments was confirmed by three experts and their reliability was obtained based on Cronbach's alpha coefficient of 0.89 and 0.79, respectively. The findings revealed that the teachers’ knowledge of the curriculum content was enhanced, and their beliefs about the role of teachers in curriculum development have been changed