Rungcam K, Jetsadawiroj S. The Comparison of Mathematics Learning Achievement on Addition and Subtraction Math Problems of Prathomsuksa 3 Students of Anurajaprasit School Taught Between Kearning Skill Enhancement Exercise Book and a Conventional Teaching Method. jomld [internet]. 2024 Jul. 30 [cited 2025 Apr. 30];9(7):128-39. available from: https://so06.tci-thaijo.org/index.php/jomld/article/view/270155