สิทธิสาร ภ. Development of Teaching Sets Basing on Guidelines on STEM Education Integrated with the 7 Learning Steps of the Learning Cycle (7E) on the Topic of Polymer for Mathayom Suksa 4 Students. AJMBU [Internet]. 2018 Jul. 23 [cited 2024 Apr. 25];8(1):108-1. Available from: https://so01.tci-thaijo.org/index.php/AJMBU/article/view/194930