Summart P, Viriyapong N. Development of Mathematics Learning Activities Using KWDL Technique to Promote Mathematical Problem Solving Abilities and Learning Achievement on Percentage Problem Topic of Grade 6 Students. J Roi Et [Internet]. 2021 Apr. 28 [cited 2024 Apr. 26];15(1):75-86. Available from: https://so03.tci-thaijo.org/index.php/reru/article/view/240361