Thongdee, P., Suwannapho, P., & Nualpang, K. (2022). Effects of Problem-Based Learning Activity Management with DAPIC Problem-Solving Processes Affecting Problem-Solving and Mathematical Connection Skills of the Sixth-Grade Students. Journal of Graduate School, Pitchayatat, Ubon Ratchathani Rajabhat University, 17(2), 81–88. Retrieved from https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/255123