1.
Prachumkayohmat N, Manakarn C, Chariyamakarn R, Srisawat Y, Umar N. The Nature of Mathematical Conceptual Understanding of Grade 6 Students on Weight Measurement Based on APOS Theory. Journal of Science, Agriculture and Technology [internet]. 2024 Mar. 28 [cited 2025 Jun. 5];2(2):43-57. available from: https://li04.tci-thaijo.org/index.php/psj/article/view/2005