Phanudomsak P, Ongrardwanich N. thai Diagnosis of Mathematical Deficiencies in Three - Dimensional for student in Grade 6 through web application. JGSR [internet]. 2023 Dec. 31 [cited 2026 Sep. 15];8(2):130-44. available from: https://so03.tci-thaijo.org/index.php/saketreview/article/view/267902