Uchida, Akitoshi. “A Review of the Studies on the Development of Concepts of Decimals and Fractions in Japanese Elementary School Children”. Advances in Social Sciences Research Journal 7, no. 8 (August 19, 2020): 302–314. Accessed November 23, 2024. http://116.203.177.230/index.php/ASSRJ/article/view/8847.