บุญมาคาร ท. Development of a Teaching Model to Enhance Ability to Solve Problems Creatively in Mathematics on the Topic of Trigonometry for the 11th Grade Students. Pitchayatat [Internet]. 2021 May 13 [cited 2024 Apr. 25];16(1):73-87. Available from: https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/247300