1.
Siriwongkhruea P, Sirichaisin K. The Development of Achievement Curriculum on Linear Equation Using Problem-Based Learning for Second Year in Vocational Certificate Program. edunsrujournal [Internet]. 2023 Dec. 28 [cited 2024 May 17];6(3):234-45. Available from: https://so02.tci-thaijo.org/index.php/edunsrujo/article/view/262081