Binti Khasanah, Cindya Alfi, and Mohamad Fatih. “Development of Numeration-Based Number Board Media for Mathematical Addition and Alteration Operations Grade II Students”. Journal of Practice Learning and Educational Development 6, no. 1 (March 19, 2026). Accessed April 29, 2026. https://digitalpress.gaes-edu.com/index.php/jpled/article/view/704.