The Life-historical Approach to Itsuki KUBO(Ⅱ) : From the practice ofschool building with the theme ofacademic abilitybuilding to the training ofyoung teachers

Why did a teacher who is said to be an excellent teacher become such an excellent teacher? Or could it be? In the history of postwar educational practice, we were practitioners and researchers who made a great contribution to educational methodology research and educational practice research by developing teaching materials and proposing educational methods to train the basics of academic ability. Based on the results of the life history research of Hiroshi Kishimoto, an elementary school teacher in the Hyogo prefecture, we have further advanced the life history research of Itsuki Kubo, an elementary school teacher in Kyoto City, who is said to be the successor and developer. This paper takes up the latter half of Kuboʼs teacher life, focuses on three ”turning points”, and clarifies his life as a teacher, the process of competence formation, and the momentum.