Pham TKC, Nguyen VB. 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 [Internet]. 2021 Dec. 11 [cited 2024 Sep. 8];10(6):15-20. Available from: https://dthujs.vn/index.php/dthujs/article/view/232