Sangtong P, Luangrangsee P. THE DEVELOPMENT OF EXTRA-CURRICULAR GAME ACTIVITY IN MATHEMATICS ON ADDING, SUBTRACTING, MULTIPLYING AND DIVIDING BETWEEN STUDENTS IN PRATHOM SUKSA 4 THE EDUCATIONAL INSTITUTION SALES NETWORK BAN PHRU PHATONG. JSC [internet]. 2024 Mar. 31 [cited 2026 Oct. 11];8(3):110-9. available from: https://so06.tci-thaijo.org/index.php/JSC/article/view/271580