สิทธิสารภัทรวดี. “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”. Academic Journal of Mahamakut Buddhist University Roi Et Campus 8, no. 1 (July 23, 2018): 108-118. Accessed November 22, 2019. https://www.tci-thaijo.org/index.php/AJMBU/article/view/194930.