PurposeThe research reported in this paper brings forth the experiences of three teachers working in different schools. These teachers learned about lesson study through a course offered at the University of Malta while, at the same time, leading a lesson study with colleagues at their school. With the COVID-19 outbreak, these teachers had, out of necessity, to adopt and accommodate for their lesson study to an exclusive online approach. This paper, hence, focuses on teachers' learning as they shifted their lesson study online.Design/methodology/approachThis paper presents a case study that delves into the experiences and perceptual insights that these teachers manifested in shifting to an exclusive online lesson study situation. Data collection is derived from a focus group discussion, teacher reflective entries and detailed reports documenting the lesson study process and experiences. Employing technological frames as the theoretical lens, a description-analysis-interpretation approach was employed to analyse and interpret reflections and grounded experiential perceptions that the respondents disclosed during their lesson study journey.FindingsNotwithstanding their initial discerned sense of loss and unpreparedness of being constrained to migrate lesson study to exclusive online means, teachers eventually recognised that digitally mediated collaborative practices enhanced self-reflection about the lesson study process. Therefore, the extraordinary situation that the teachers in this study experienced not only disrupted their modus operandi but also allowed them to discern new opportunities for learning about digital technology use in lesson study.Practical implicationsDisruption, brought about by unforeseen circumstances, takes teachers and professional development facilitators out of their comfort zones, invariably helping them grow out of their limitations and rethink lesson study practices.Originality/valueIntentionally driven disruptions prompt teachers to resolve their dissatisfactory situations by thinking out of the box, eventually helping them to improve their professional practices.

PurposeThe paper focusses on lesson study, which generally engages the collaborative work of a group of teachers, as implemented with a primary school art teacher who had limited opportunities for collaboration. Through lesson study, the teacher worked closely with a lesson study facilitator and an art education expert to plan a research lesson. The study explores how this collaboration generated cognitive conflicts and eventually teacher change.Design/methodology/approachThis paper presents a case study using a thematic approach to data analysis. The lesson study involved weekly face-to-face meetings and daily online communications over a period of eight weeks. In an attempt to reflect upon and resolve conflicts, the teacher kept a journal in which the teacher wrote down lengthy accounts of the discussions with knowledgeable others, the teacher’s struggles and ways of resolving these. Data were complemented by the different lesson plan versions, the post-lesson discussions and a detailed report documenting the lesson study process.FindingsThe paper provides insights into the role that cognitive conflicts play for teacher change. Through ongoing communication, reflection and support to resolve conflicts, the teacher recognised more collaborative opportunities for professional development, freed from rigid lesson planning practices and reported a new conceptualisation to teaching.Practical implicationsDrawing on the literature about effective teacher professional learning, the paper offers implications for supporting teacher change.Originality/valueThis paper provides insights into how lesson study may provide conditions that enable teachers' cognitive conflict and facilitate their consequent resolution.

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A three-phase 'task-first' lesson structure is frequently suggested when teaching mathematics through inquiry. We investigate how secondary school teachers of mathematics structure their inquiry lessons and examine how and why they deviate from a 'task-first' structure. We present detailed lesson observation data from three teachers participating in a year-long professional development programme focused on inquiry teaching. We track the developing structure of these teachers' inquiry lessons through minute-by-minute lesson analysis, describe how their lesson structures altered over time and explore why. Our data show that contextual constraints may explain why teachers departed from the 'task-first' lesson structure. In their inquiry teaching, two of the teachers adopted more scaffolded approaches, including the use of a sequence of smaller sub-tasks and teacher interventions. We argue that these modifications to a 'task-first' lesson structure are legitimate ways to support student learning through inquiry; indeed, that they may offer some advantages for inquiry teaching.