Phattaratanachit P, Boonprajak D, Sokuma K. Development of the Mathematics Learning Achievement on GCD (Greatest Common Divisor ) and LCM ( Least Common Multiple) Problems of Mathayom Suksa 1 Students Using Simulation Based Learning Phranakhon Rajabhat University. JAR [internet]. 2021 May 4 [cited 2026 Oct. 1];26(1):315-26. available from: https://so04.tci-thaijo.org/index.php/jar/article/view/246444