Astari, Sharli Yunita, Nila Kesumawati, and Misdalina. “Development of Social Arithmetic Teaching Materials Using IT-Based PMRI Approach for SMP Students”. Mathematics Education Journal 15, no. 2 (June 30, 2021): 191–202. Accessed June 13, 2025. https://jpm.ejournal.unsri.ac.id/index.php/jpm/article/view/237.