สุวรรณรงค์ เ, สุขมาตย์ อ, พิมดี ไ. The Development of Instructional Packages for Reinforce The System Thinking with Cooperative and Problem-Based Learning for Mathayomsuksa 5 at Bodindecha (Sing Singhaseni) School. J. IND. EDUC. [Internet]. 2015 Dec. 31 [cited 2024 Apr. 19];14(3):77-84. Available from: https://ph01.tci-thaijo.org/index.php/JIE/article/view/122303