#10823. Analysis of the final comments provided by a knowledgeable other in lesson study

September 2026publication date
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Education;
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Abstract:
Lesson study has been implemented in schools around the world as a method of professional development for teachers. During the Post-lesson Discussion, after the teacher has commented on the lesson, all of the observers discuss the lesson, and the “knowledgeable other” (koshi), a specially invited expert, provides final comments. This study analyzed the final comments made across three research lessons by a highly regarded koshi in order to uncover the themes stressed and developed. In this way, we hope to go beyond a statement of desirable roles and responsibilities to learn in more depth about how a koshi can be most effective in making final comments in Post-lesson Discussions.
Keywords:
Final comments; Knowledgeable other; Lesson study; Post lesson Discussion; Structured problem solving

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