@article{oai:naruto.repo.nii.ac.jp:00029351, author = {SAKAI, Takeshi and AKAI, Hideyuki and TAMURA, Kazuyuki and ISHIZAKA, Hiroki and OZAWA, Hiroaki}, journal = {鳴門教育大学国際教育協力研究, NUE Journal of International Educational Cooperation}, month = {Feb}, note = {In this study, based on the Global Lesson Study (GLS) program, an mathematics lesson study was conducted between teachers in Japan and Singapore, with Japan as the host school. In the process of the GLS, it was confi rmed that the GLS functions as a Plan-Do-Check-Act (PDCA) cycle and that it is eff ective to implement the GLS in a two-year cycle when it is implemented among in-service teachers. As an “Extension”, we proposed the following two points: (1) the possibility of action research by combining survey research and classroom practice, and (2) the possibility of a “GLS package” in the context of international educational cooperation.}, pages = {189--198}, title = {The Potential of the Global Lesson Study as PDCA+E : Verification through a Case Study in Mathematics}, volume = {15}, year = {2022} }