Nguyen DH, Nguyen TNH. Some measures to develop reasoning-thinking competence for grade 12 students through teaching volume of polyhedron. Dong Thap University Journal of Science [Internet]. 2023 Jun. 14 [cited 2024 Sep. 19];12(02S):38-47. Available from: https://dthujs.vn/index.php/dthujs/article/view/870