wichiansri warangkana, Piyanukool S, Namsawat W. Effect of Learning Management by Using Problem Based Learning toward Learning Achievement and Scientific Problem-Solving Ability of Prathomsuksa 6 Students: Effect of Learning Management by Using Problem Based Learning toward Learning Achievement and Scientific Problem-Solving Ability of Prathomsuksa 6 Students. rtnb [internet]. 2024 Apr. 28 [cited 2025 Apr. 7];6(1):1-15. available from: https://so07.tci-thaijo.org/index.php/rtnb/article/view/3956