It is indicated that research on professional development programmes (PDPs) for mathematics teachers mostly concerns whether a programme affects the teachers' practice or student learning, while the teachers' learning is treated as a "black box." Calls have been made for a shared body of knowledge on teachers' professional learning and…

The knowledge regarding teacher learning processes is fundamental to organising a professional development (PD) programme systematically and effectively. In the study reported in this article, we examined content-related teacher learning processes in the context of inclusive mathematics teaching. We first explain approaches to inclusive…

This article focuses on professional development among teachers within a Swedish national network on toddler mathematics education. The activities within this network can be understood as participant-oriented collective professional development based on a knowledge of practice approach. An inventory of toddler mathematics was performed within this…

This article reports a study of educators differentiating aspects of mathematical knowledge for teaching in preschool as part of a further-education programme. Eight Swedish preschool educators participated in focus group discussions about documentations from their own practice during a school year, to enhance their awareness of their mathematics…

The paper reports an investigation into how a group of elementary and middle school teachers collectively attempted to solve and understand a fraction division problem using an area model. Solving the word problem required that teachers determine how many two-thirds fit into three-fourths. The teachers struggled to conceptualise fraction division,…

Teams of educators conducted lesson study independently, supported by a resource kit that included mathematical tasks, curriculum materials, lesson videos and plans, and research articles, as well as protocols to support lesson study. The mathematical resources focused on linear measurement interpretation of fractions. This report examines the…

This paper investigates the effects of a sustained professional development project in South Australia in which a small group of preschool educators worked with the authors to develop their own knowledge and skills in facilitating young children's mathematical learning. Through the development of an approach to pedagogy that linked the mandated…