Khamma N, Meesap P. A Study of the need for learning management to enhance problem solving skills Mathematics of teachers. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University [Internet]. 2019 Jul. 10 [cited 2024 Apr. 20];13(2):590-603. Available from: https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/185833