This study investigates the influence of active learning methods embedded within the Lesson Study (LS) framework on the pedagogical practice of early-career teachers and on students’ reasoning, communication, and language engagement in secondary education. The research addresses persistent challenges widely identified in the literature, including student passivity, uneven participation, limited argumentation, and language barriers in both monolingual and multilingual classrooms (Alexander, 2008; Gillies, 2016; Hattie, 2009). At the same time, it responds to the need for sustainable, practice-based models of teacher professional development, as highlighted in Lesson Study research (Lewis, 2002; Stigler & Hiebert, 2009).

The study was conducted through a series of interdisciplinary LS cycles involving early-career teachers of mathematics, chemistry, geography, biology, English, and social sciences. The research design integrates three interconnected components: (1) classroom-based lesson research, (2) methodological experimentation with active learning strategies, and (3) subject-specific and interdisciplinary inquiry. This design enabled systematic analysis of how pedagogical decisions evolve through collaborative planning, observation, and reflection, and how these changes shape student learning processes.

Instructional interventions were implemented across multiple grade levels. In Grade 11 mathematics, the study explored the integration of worked-example-based and inquiry-based approaches to support students’ justification and comparison of solution strategies. In Grade 9, structured group work, “Think–Pair–Share,” and time-regulated discussion formats were used to enhance communicative engagement. In subjects taught in a second language (e.g., history and geography), structured “round/robin” interaction formats were introduced to reduce linguistic barriers and ensure balanced participation. In Grade 8, interdisciplinary eco-context inquiry tasks supported the development of argumentation through problem-based and formative assessment approaches.

Students were grouped into achievement levels (A, B, C), allowing analysis of differentiated learning trajectories and the inclusiveness of instructional strategies. Data sources included classroom observations, students’ written work, audio-recorded discussions, diagnostic and formative assessments, and teachers’ reflective journals. A thematic analysis approach, supported by triangulation across data sources, was used to identify patterns in teaching practice and student engagement.

The findings indicate that the integration of active learning strategies within LS contributes to more intentional lesson design, increased use of scaffolding, and greater attention to student interaction. At the student level, structured collaboration supported increased participation and use of academic language, particularly among B- and C-level learners, while A-level students often assumed leadership roles. Time-managed and structured discussion formats were particularly effective in promoting equitable participation in multilingual classrooms.

However, the results were not uniformly positive. In several cases, lower-achieving students remained dependent on stronger peers, and improvements in the quality of reasoning were uneven. The effectiveness of active learning strategies was influenced by contextual factors, including teachers’ experience, time constraints, and classroom composition. While structured interaction reduced participation gaps, language-related challenges persisted, especially in second-language contexts. These findings highlight the need for sustained scaffolding and careful adaptation of instructional strategies.

Overall, the study demonstrates the potential of Lesson Study as a collaborative and reflective professional learning framework that supports the integration of active learning in diverse classroom contexts. At the same time, it emphasises that the impact of such approaches depends on contextual conditions and cannot be assumed as universally transferable. The study contributes to ongoing European discussions on inclusive pedagogy, teacher professional development, and the design of learning environments that support reasoning, communication, and equitable participation across diverse student populations. 

Furthermore, the study suggests that the sustainability of pedagogical change depends on the continuity of collaborative inquiry and institutional support within schools. Without structured opportunities for ongoing reflection and adaptation, the implementation of active learning strategies may remain fragmented and short-term, limiting their long-term impact on both teaching practice and student outcomes.

The study employed a qualitative, practice-based research design grounded in the Lesson Study (LS) methodology, widely recognised as a model of collaborative, inquiry-oriented professional learning (Lewis, 2002; Stigler & Hiebert, 2009). Lesson Study was selected as the central framework due to its capacity to integrate systematic investigation of classroom practice with teacher professional development. The research was conducted in a secondary school context and involved early-career teachers from multiple subject areas, including mathematics, chemistry, geography, biology, English, and social sciences. The study unfolded through several LS cycles, each comprising collaborative planning, classroom implementation of research lessons, structured observation, and reflective discussion. Teachers jointly identified a pedagogical focus, designed lessons incorporating active learning strategies, and established observation criteria related to student reasoning, communication, and participation. Particular attention was given to students across achievement levels (A, B, C). A range of active learning methods was implemented depending on subject content and instructional goals. These included inquiry-based tasks, worked examples combined with guided questioning, structured group work, “Think–Pair–Share,” time-regulated discussion formats, and round/robin speaking strategies. In interdisciplinary cycles, teachers developed common task structures and assessment criteria to ensure coherence across subjects. Participants included students from Grades 8, 9, and 11. Data sources comprised classroom observations, audio recordings of student discussions, samples of students’ written work, diagnostic and formative assessments, and teachers’ reflective journals. Observations focused on academic language use, participation patterns, reasoning processes, and interactional roles. Data analysis followed a thematic approach. Observation and reflection data were coded to identify patterns in teaching practices, student engagement, and differentiation. Student work was analysed for reasoning quality, use of evidence, and clarity of communication. Triangulation enhanced the credibility of findings and supported consistency in interpreting patterns across different Lesson Study cycles and subject areas. However, several methodological limitations should be acknowledged. The study was conducted within a single school, which may limit generalisability. Variability in teachers’ experience and implementation across LS cycles may also have influenced outcomes. In addition, the qualitative nature of the data constrains the extent to which causal relationships can be established. Ethical considerations were addressed throughout the study. Participation was voluntary, informed consent was obtained, and anonymity and confidentiality were ensured. Peer debriefing and member checking were used to enhance trustworthiness and validate interpretations.

The study demonstrates that the integration of active learning methods within the Lesson Study framework has a positive influence on both young teachers’ pedagogical practice and students’ learning processes. LS provided a structured yet flexible space for teachers to experiment with instructional strategies, observe their impact, and refine practice through collaborative reflection. This process supported the development of more student-centred, dialogic, and inclusive teaching approaches. At the level of student learning, the findings indicate that active learning strategies foster improved reasoning, communication, engagement across achievement levels. Structured collaboration and timed discussion formats were particularly effective in promoting equitable participation and reducing language barriers, especially in subjects taught in a second language. While high-achieving students often took on leadership roles, students at average and lower achievement levels benefited from scaffolding and clear interactional structures that supported confidence, academic language use. The interdisciplinary nature of the study further suggests that shared pedagogical principles – such as inquiry, dialogue, formative assessment can be meaningfully adapted across subjects. This reinforces the value of Lesson Study as a mechanism for building professional learning communities and aligning instructional practices around common educational goals. Overall, the study contributes to research on active learning and Lesson Study by offering practical insights into how pedagogical integration can support inclusive learning environments and teacher professional development in secondary education. The findings highlight the importance of sustained collaborative inquiry for addressing complex classroom challenges related to reasoning, communication, motivation. The study also points to the importance of sustained, school-based collaborative inquiry for addressing complex pedagogical challenges. By embedding active learning experimentation within LS cycles, teachers were able to align instructional innovation with reflective practice. Future research may build on these findings by examining the long-term impact of such approaches on teacher professional trajectories and student learning outcomes across diverse educational contexts.

Alexander, R. (2008). Towards dialogic teaching: Rethinking classroom talk (4th ed.). Dialogos. Copp, S.B., Cabell, S.Q., Gabas, C., Slik, D., Todd, J. (2023). The rising star scaffolding guide: Supporting young children’s early spelling skills. The Reading Teacher, 76(4), 380-389. Gillies, R.M. (2016). Cooperative learning: A review of research and practice. Australian Journal of Teacher Education, 41(3), 39–54. https://doi.org/10.14221/ajte.2016v41n3.3 Hasan, M., Karim, M. (2019). Scaffolding effects on writing acquisition skills in EFL context. Arab World English Journal, 10(4), 288-298. https://doi.org/10.24093/awej/vol10no4.2 Hattie, J. (2009). Visible learning: A synthesis of over 800 meta-analyses relating to achievement. Routledge. Johnson, D.W., Johnson, R.T., Smith, K.A. (2014). Cooperative learning: Improving university instruction by basing practice on validated theory. Journal on Excellence in College Teaching, 25(3-4), 85-118. Jumaat, N.F., Tasir, Z. (2014). Instructional scaffolding in online learning environment: A meta-analysis. https://www.researchgate.net/publication/269033099_Instructional_Scaffolding_in_Online_Learning_Environment_A_Meta-analysis Kazemi, E., Stipek, D. (2001). Promoting conceptual thinking in mathematics: The interaction of student discourse and instructional practices. Educational Researcher, 30(2), 10-21. https://doi.org/10.3102/0013189X030002010 Kirova, A., Jamison, N.M.(2018). Peer scaffolding techniques and approaches in preschool children’s multiliteracy practices with iPads. Journal of Early Childhood Research, 16(3), 245-257. McLeod, S. (n.d.). Vygotsky’s zone of proximal development and scaffolding. Simply Psychology. https://www.simplypsychology.org/author/saulmcleod Portier, C., Friedrich, N., Peterson, S.S. (2019). Play(ful) pedagogical practices for creative collaborative literacy. The Reading Teacher, 73(1), 17-27. Prince, M. (2004). Does active learning work? A review of the research. Journal of Engineering Education, 93(3), 223-231. https://doi.org/10.1002/j.2168-9830.2004.tb00809.x Vygotsky, L.S. (2000). Thought and language (A. Kozulin, Trans.). MIT Press. (Original work published 1934) Lewis, C. (2002). Lesson study: A handbook of teacher-led instructional change. Research for Better Schools. Lewis, C., Perry, R., Murata, A. (2006). How should research contribute to instructional improvement? The case of Lesson Study. Educational Researcher, 35(3), 3-14. https://doi.org/10.3102/0013189X035003003 Stigler, J.W., Hiebert, J. (2009). The teaching gap: Best ideas from the world’s teachers for improving education in the classroom (2nd ed.). Free Press. (Original work published 1999) Wenger, E. (2008). Communities of practice: Learning, meaning, and identity (2nd ed.). Cambridge University Press. (Original work published 1998) Wilson, K., Devereux, L. (2014). Scaffolding theory: High challenge, high support in academic language and learning contexts. Journal of Academic Language & Learning, 8(3). http://journal.aall.org.au/index.php/jall/article/view/353/210 Xu, Y., Chen, C.-C., Spence, C., Washington-Nortey, M., Zhang, F., & Brown, A. (2022). Supporting young Spanish-speaking English learners through teacher scaffolding and reciprocal peer tutoring. Early Child Development and Care, 192(8), 1324-1336.