Isoda M. Figural Representations on Theory of Mathematical Representations: Operational Diagram and Ways to See . J. Thail. Soc. Math. Educ. [internet]. 2026 Sep. 18 [cited 2026 Sep. 27];1(1):# 29 - 52. available from: https://so11.tci-thaijo.org/index.php/JTSMEd/article/view/4264