Kaewsombat, S., Thongchan, P. and Palajit, S. (2020) “Development of Learning Activity Packages of Food Processing Using Project Based Learning and Co-operative Learning to Influence Practical Skills, Creative Thinking, and Learning Achievement of Seventh Grade Students ”, Journal of Roi Et Rajabhat University, 14(2), pp. 114–125. available at: https://so03.tci-thaijo.org/index.php/reru/article/view/222196 (accessed: 28 September 2026).