Prasetsang, C., & Piasiri, S. . (2022). The learning result of visual art subject for grade 2 students by lesson study and open approach . Journal of Research and Development Institute Rajabhat Maha Sarakham University, 9(2), 543–558. Retrieved from https://so03.tci-thaijo.org/index.php/rdirmu/article/view/261040