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The main purpose of this study was to explore how engaging in lesson study improves secondary mathematics teachers’ effective lesson implementation to support students’ learning better. The research was conducted in Jimma City, Ethiopia, and employed design-based research with qualitative data collected from two secondary schools and 12 mathematics teachers. A purposive sampling technique was used to select participants. Interviews, observations, and document analysis were the main sources of data. The data were analyzed thematically supported by Atlas-ti qualitative data analysis software. Findings indicated that engaging in lesson study improved mathematics teachers’ effective lesson implementation. LS improved participants’ practice of lesson presentation, use of diverse student-centered teaching methods, assessment, behavior management, instructional aids, time management, and feedback strategies. School leaders’ positive attitudes and teachers’ commitment were found to be supportive, while shortage of time and teachers’ high teaching load were constraints. It would be vital to integrate lesson study into teachers’ school-based professional development programs to improve mathematics teachers’ effective lesson implementation in the study setting. The study suggests further investigation in more secondary schools by incorporating quantitative evidence with larger a sample size.

Purpose: The main purpose of this study was to explore how engaging in lesson study enhances secondary school mathematics teachers' pedagogical practice in lesson planning in Jimma, Ethiopia. Design/methodology/approach: The study employed a design-based research approach with qualitative and quantitative data collected from two secondary schools, and 12 mathematics teachers. A purposive sampling technique was used to select participants. Interviews, observations, questionnaires and document analysis were the main sources of data. Qualitative data were analyzed using themes with the support of Atlas-ti qualitative data analysis software. Quantitative data were analyzed using the Wilcoxon ranked signs test. Findings: The findings revealed that engaging secondary school mathematics teachers in lesson study enhanced their lesson planning competence. As a result, teachers began to carefully plan detailed lessons, use curriculum materials and create more student-oriented lessons. Lesson study was found to be a potent model on which to build secondary school mathematics teachers' lesson planning competence. Hence, it would be rewarding to integrate lesson study into the present school-based teachers' pedagogical capacity-building program in the study settings. Research limitations/implications: The data were collected from particular localities with a small sample size in the quantitative phase. Therefore, it is difficult to generalize to the entire secondary school teachers in the country. However, thick descriptions were provided that would allow readers to determine the transferability of the findings to their specific school context. Future research should investigate the effects that enhanced TPP in lesson planning has on teachers' mathematics teaching in more schools using a larger sample size. Practical implications: This study provides insight into and empirical evidence of how engaging in the process of LS is essential to enhance teachers' lesson planning competence. It adds important knowledge to a small but growing model of lesson study research. It also informs future researchers in the practical use of LS where lesson planning is a crucial concern in many secondary schools of the country. Originality/value: This research was originally conducted to build mathematics teachers' pedagogical practice in lesson planning through lesson study in Ethiopian secondary school contexts.

Purpose: This study aimed at exploring mathematics teachers' reactions, learning, school leaders' support, and the use of the lesson study for transformative assessment (LSforTA) program ideas in practice. Design/methodology/approach: The LSforTA program was new and therefore, a local and grounded approach was needed to examine teachers' knowledge and their skills acquired using LSforTA. A design-based research approach was therefore selected to evaluate and refine the LSforTA approach. Findings: The program affected teachers' practices of transformative assessment and enhanced their knowledge and skills in assessing students transformatively in a positive way. The paper concludes how LSforTA procedures were adapted in response to this evaluation and provides suggestions for future development and research. Originality/value: With its original combination of conceptual and theoretical lenses, the research contributes to the academic literature by linking transformative assessment, lesson study and school context. This connection provides new opportunities for teachers to develop strategies to create meaningful assessment practices embedded with their instructional process in the context of their schools.

Transformative assessment is a classroom assessment aimed at changing both how teachers teach and students learn a lesson. Nowadays, this kind of assessment needs to be practiced to encourage teachers to be creative and flexible when designing their assessments and for students to be reflective and take responsibility for their learning. Hence, this qualitative study aimed to examine mathematics teachers' practices of transformative assessment and the associated challenges. Data collected from eight teachers using semi-structured interviews and lesson observations were analysed thematically. It was found that teachers did, in fact, not provide evidence of practicing transformative assessment in their teaching. There was an attempt to align assessment to learning outcomes even though the assessment practice utilized remained traditional. Teachers' assessment practices focused on fast-learners while leaving behind the majority, lacking balance and equity. Teacher, student, and school-related factors were the main challenges facing the teachers during assessment practices. The study presents possible strategies by which transformative assessment practices in mathematics teaching can be developed, implemented, and sustained to improve students' learning.

The main purpose of this study was to explore how engaging in lesson study improves secondary mathematics teachers' effective lesson implementation to support students' learning better. The research was conducted in Jimma City, Ethiopia, and employed design-based research with qualitative data collected from two secondary schools and 12 mathematics teachers. A purposive sampling technique was used to select participants. Interviews, observations, and document analysis were the main sources of data. The data were analyzed engaging in lesson study improved mathematics teachers' effective lesson implementation. LS improved participants' practice of lesson presentation, use of diverse student-centered teaching methods, assessment, behavior management, instructional aids, time management, and feedback strategies. School leaders' positive attitudes and teachers' commitment were found to be supportive, while shortage of time and teachers' high teaching load were constraints. It would be vital to integrate lesson study into teachers' school-based professional development programs to improve mathematics teachers' effective lesson implementation in the study setting. The study suggests further investigation in more secondary schools by incorporating quantitative evidence with larger a sample size. [ABSTRACT FROM AUTHOR]