Singthong S, Wattanaudomchai S, Witcharapote J. The Effect of Problem-Based Learning Management Combined with the Think-Pair-Share Technique on Promoting Problem-Solving Ability in Social Studies on Basic Economics for Matthayomsuksa 1 Students. JBER [internet]. 2026 Jun. 16 [cited 2026 Aug. 28];12(2):751-65. available from: https://so06.tci-thaijo.org/index.php/jber/article/view/290924