Wahyuningrum, Ayunda Sri, Didi Suryadi, and Turmudi. “Students’ Prior Knowledge As an Ontogenic Obstacle on the Topic of Ratio and Proportion”. Mathematics Education Journal 17, no. 1 (October 15, 2024): 55–68. Accessed May 19, 2025. https://jpm.ejournal.unsri.ac.id/index.php/jpm/article/view/180.