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	Lesson Study	Badania aktywne	Analiza programu nauczania	Badawcze projektowanie
Dziedzina	Metody terenowe	Badania jakościowe	Metody terenowe	Metody terenowe
Rodzina	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline
Rok powstania	Late 19th century Japan; international dissemination from 1999	1946	1949 (Tyler); 1980s–2000s (Posner's analytic framework)	1992
Twórca	Japanese elementary school teachers (formalized); introduced to Western research by James Stigler & James Hiebert	Kurt Lewin; expanded by Kemmis, McTaggart, Reason & Bradbury	George J. Posner (systematic framework); Ralph Tyler (foundational rationale)	Ann L. Brown and Allan Collins (independently, 1992)
Typ	Collaborative practitioner inquiry / professional development research	Method	Qualitative / mixed document analysis	Interventionist qualitative-quantitative mixed methodology
Źródło pierwotne	Stigler, J. W., & Hiebert, J. (1999). The Teaching Gap: Best Ideas from the World's Teachers for Improving Education in the Classroom. Free Press. ISBN: 978-0684852744	Lewin, K. (1946). Action research and minority problems. Journal of Social Issues, 2(4), 34–46.	Posner, G. J. (2004). Analyzing the Curriculum (3rd ed.). McGraw-Hill. ISBN: 978-0072823899	Brown, A. L. (1992). Design experiments: Theoretical and methodological challenges in creating complex interventions in classroom settings. Journal of the Learning Sciences, 2(2), 141–178.
Inne nazwy	Jugyou Kenkyuu, LS, collaborative lesson research, teaching study	Participatory Action Research, PAR, Collaborative Inquiry	curriculum evaluation, curriculum review, syllabus analysis, curriculum appraisal	DBR, design research, design experiment, educational design research
Pokrewne	5	1	6	6
Podsumowanie	Lesson study is a structured, cyclical form of professional development and educational research in which a team of teachers collaboratively plans a single 'research lesson,' observes it live in a classroom, analyzes student learning in detail, revises the lesson, and shares findings with the broader teaching community. Originating in Japanese elementary schools and brought to international attention by Stigler and Hiebert's 1999 comparative study, it has become one of the most widely adopted teacher-led inquiry methods worldwide.	Action research is a collaborative research methodology in which researchers work with practitioners and community members to investigate a problem, implement change, and evaluate outcomes, cycling through reflection, action, and learning. Developed by Kurt Lewin (1946), action research bridges research and practice, aiming simultaneously to produce knowledge and practical improvement.	Curriculum analysis is a systematic research method for examining the content, structure, goals, and underlying assumptions of educational curricula — including written syllabi, textbooks, lesson plans, and policy documents. By mapping what is taught, how it is sequenced, and what values are embedded, researchers and educators can evaluate alignment with learning objectives, identify gaps or biases, and guide curriculum reform across all levels of education.	Design-based research (DBR) is an iterative, interventionist methodology that simultaneously designs educational interventions and builds theory about how and why those interventions work in authentic, complex settings. Originating in Ann Brown's 1992 classroom experiments and Allan Collins's parallel work, DBR treats the learning environment as both the object of study and the site of theory generation, cycling through design, enactment, analysis, and redesign until both practical improvement and theoretical insight are achieved.