1.
Sitha S, Charoen-In U. DEVELOPING COLLABORATIVE PROBLEM SOLVING IN PHYSICS OF MATHAYOMSUKSA 5 STUDENTS BY USING PROBLEM – BASED LEARNING. JMND [internet]. 2020 May 20 [cited 2025 Dec. 5];7(5):279-92. available from: https://so03.tci-thaijo.org/index.php/JMND/article/view/243404