Khunpeng, C. ., Pratoomtong, W., & Pratoomtong, W. . (2022). Effects of Chemistry Teaching Emphasizing Conceptual Development with Polya’s Technique on Acid-Base for Eleventh Grade Students. Journal of Education Rajabhat Maha Sarakham University, 19(1), 239–252. Retrieved from https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/256509