Pham, Thi Kim Chau, and Van Be Nguyen. “Teaching the Topics Related to Arithmetic and Operations in 5th Grade Mathematics Oriented to Developing the Competency of Mathematical Thinking and Argument”. Dong Thap University Journal of Science 10, no. 6 (December 11, 2021): 15–20. Accessed September 8, 2024. https://dthujs.vn/index.php/dthujs/article/view/232.