Popom, Kalsuda, and Ratchaniwan Anutragulcha. “he evelopment of athematical roblem olving kills in the ubjects of ombined ddition and ubtraction roblems by sing 5Es nquiry earning ycle ntegrated ith GT ooperative earning echnique for rathom uksa tudents”. Academic Journal of Mahamakut Buddhist University Roi Et Campus 10, no. 1 (May 22, 2020): 507-517. ccessed December 2, 2021. https://so01.tci-thaijo.org/index.php/AJMBU/article/view/247257.