There is no doubt that a lesson plan is a necessary product of Lesson Study. However, the collaborative work among teachers that goes into creating that lesson plan is largely under-appreciated by non-Japanese adopters of Lesson Study, possibly because the effort involved is invisible to outsiders, with our attention going to its most visible…

This study investigates the use of Lesson Study in three U.S. schools. Lesson Study is part of the culture of teaching in Japanese K-8 schools. Researchers in the United States brought the practice of Lesson Study ("jugyokenkyo" in Japanese) to light in the late 1990's while investigating reasons for differences in the performance of…