Kheawpan, Aekapol, and Watcharin Sriraksa. “Learning Outcomes of the 21st Century Learning Skills Development by Flipped Classroom in Visual Art Subject on Ceramic Design Topic for Grade 8 Students”. Journal of Innovation and Learning Sciences 13, no. 1 (March 30, 2019): 157–170. accessed September 12, 2026. https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/181158.