...David Sekao Purpose Lesson study (LS) is a collaborative teacher development practice, and one of the key attributes thereof is the involvement of the external knowledgeable other (koshi). Despite well-documented evidence that LS improves the craft of teaching, the entrenched concept...

... Knowledgeable other Funding: This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. EFL teachers play significant roles in developing students’ language proficiency, and they are the chief of the overall instructional...