ศรีวิเนตร ส. The Development of an Instructional Model for Chemistry Focus on Self-directed Learning to Promote Critical Thinking and Learning Achievement for Mathayom Suksa 4 Students. J Roi Et [Internet]. 2019 Aug. 30 [cited 2024 Apr. 26];13(2):41-52. Available from: https://so03.tci-thaijo.org/index.php/reru/article/view/187016