Anupan, Akarapon. “The Effects of Activities Management According to The GPAS 5 Steps Process on Mathematics Learning Achievement of Grade 3 Students”. International Journal of Sociologies and Anthropologies Science Reviews 5, no. 5 (August 29, 2025): 665–672. accessed April 22, 2026. https://so07.tci-thaijo.org/index.php/IJSASR/article/view/7193.