สิงห์คำ น, ชมภูคำ ว, ชมภูคำ พ. Development of Mathematics Activity Through Cooperative Learning with the Geometer’s Sketchpad Program to Encourage Learning Achievement and Creative Thinking Skills of Mathayomsuksa 2 Students. J.Grad Res [Internet]. 2018 Dec. 25 [cited 2024 Apr. 26];9(2):1-20. Available from: https://so02.tci-thaijo.org/index.php/banditvijai/article/view/133933