1.
Baikulab K, Juithong S, Kanreutai K. The Effects of Problem-Based Learning Activities in Mathematics towards Equation Problem Solving Ability of Grade 6 Students . HSSJ [Internet]. 2020 Jun. 22 [cited 2024 May 19];7(1):140-52. Available from: https://so03.tci-thaijo.org/index.php/hssj/article/view/248502