Jongjit N, Sangarwut A, Kadroon T. The Development of Mathematical Problems Solving on Two Variable Linear Equations System using Learning Activities of Polya’s Model Combined with Think-Pair-Share Technique for Matthayomsuksa 3 Chaiya Wittaya School Suratthani. jg-mcukk [internet]. 2025 Sep. 30 [cited 2026 Sep. 28];12(3):441-54. available from: https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/279272