...Tendai Charles Purpose This conceptual paper strengthens the basis on which lesson study and learning study justify claims about student learning without treating classroom data as proof. It reframes evidencing learning as a problem of proportionate warrant linking claims, the object of learning...

...Hao Yu; Rui Ding; Jiajia Li; Shirley Tan Purpose This reflective self-study examines how multi-dimensional interactions within an interdisciplinary lesson study on “Time” contributed to my professional growth as a novice mathematics teacher. It focuses on the interaction patterns that supported...

...Yasemin Karahisarlı; Seval Deniz Kılıç Purpose This study aims to explore how an experienced mathematics teacher restructured her pedagogical understanding of direct proportion through a dialogically mediated lesson study (LS) process. Design/methodology/approach This study reports...

... teachers design “entry points” bridging daily life with scientific concepts. Design/methodology/approach Adopting a Constructivist Grounded Theory Approach (Charmaz, 2006), I analyzed teacher discourse from a two-year longitudinal Lesson Study (13 meetings, 2023–2025) involving eight teachers, using...

...Soetkin Werbrouck; Amélie Rogiers; Hilde Van Keer Purpose Despite ongoing efforts to enhance educational equity, students in prevocational education continue to struggle with reading comprehension and motivation, posing challenges for teachers. This study examines how Lesson Study influences...

...Cláudia Faria; Sílvia Ferreira Purpose Inclusive education highlights the need to address students' diverse cultural, linguistic, social and cognitive backgrounds to ensure equitable learning for all students. This study aims to examine how an adapted lesson study model supports pre-service...

...Beth Ann A. Skelly-Kempf; Sharon Dotger Purpose The purpose of this article is to share a research proposal from a Lesson Study focused on elementary science, while analyzing the cycle through Kager et al. 2023 framework. Design/methodology/approach Our approach was to conduct...

...Yoko Takimoto Purpose The purpose of this study is to systematically review empirical research on teachers' learning processes in lesson study and learning study in Asian contexts, with particular attention to the mediating role of artifacts in learning. Design/methodology/approach Following...

...Teceli Karasu; İbrahim Yildiz; Ahmet Aykan Purpose This study aims to examine the effects of the lesson study model on the professional development of religious culture and moral knowledge (RCMK) teacher candidates and the learning outcomes of their students. Design/methodology/approach Before...

...Kanako N. Kusanagi Purpose This study investigates how lesson study (LS) has been sustained in Indonesia beyond external project support under conditions of reform instability. It examines how university-based teacher educators acted as key mediators in maintaining continuity across changing...

...Selda Aras; Ayca Ulker; Betul Dilsad Ertekin; Gamze Nur Inonu Purpose This study aims to examine preservice early childhood teachers' experiences of Lesson Study within Communities of Practice framework. Design/methodology/approach The study adopted a case study design. Twenty-three preservice...

...Jongsung Kim; Shirley Tan; Ban Heng Choy Purpose This editorial introduces the special issue on koshi (講師) in communities of lesson studies and explores how individuals came to assume this role (became), how they experience it in practice (being) and how they continue to develop it throughout...

...Ayça Düzler; Galip Kartal Purpose This study examines how integrating ChatGPT into a lesson study cycle (CollabAI) influences the professional development of pre-service English teachers, with a focus on pedagogical reasoning, classroom practice and reflective collaboration. Design/methodology...

...Alireza Sadeghinia; Hamzeh Rahimi; Zohreh Borhani Kakhki Purpose This study examines the impact of lesson study (LS) programs on the professional development (PD) of primary education student teachers (PEST) at Farhangian University. Using an exploratory mixed-methods approach, the research...

...Derya Diana Cosan; Carl Winsløw Purpose Transition problems between institutions are well-known and sometimes difficult to address in educational research. Lesson study is often described as a professional development tool for teachers within a school institution and so would not immediately...

...Erlina Ronda; Deborah Ann Collades; Dennis Danipog; May Chavez Purpose This study investigates the factors that enable or constrain the adoption and sustainability of Lesson Study as a professional learning activity among teachers in the Philippines. It aims to provide insights...

...Bridget Flanagan; Mairéad Hourigan Purpose This research aims to reveal the lived experiences of a novice facilitator within the Irish context with a particular focus on the different facilitator roles assumed when guiding lesson study (LS) in a rural primary school. Design/methodology/approach...

...Hyomin Kang; Yoshinori Shimizu Purpose This study aims to explore how an early career teacher (ECT) improved her lesson through a pre-lesson and a research lesson and how this process supported shifts in her noticing. Design/methodology/approach In a school-based lesson study (LS), a case...

...Gamze Almacioglu; Fadime Yalcin Arslan Purpose This systematic review examines the role of lesson study (LS) in pre-service teacher education by synthesising findings from 37 empirical studies published between 2010 and 2024. It investigates how LS has been conceptualised, implemented...

...João Pedro da Ponte Purpose The aim of this article is to analyze the features of the role of the facilitator in leading post-lesson discussions in lesson study in the contextual conditions of Portugal, identifying points of contact and differences regarding the role of koshi in Japan. Design...