Manullang, Tasya Rumoendang, S. F. Rabia, and Endra Putra Raharja. “Optimizing the PADI (Diagram Board) Learning Media to Improve Mathematics Learning Outcomes of Grade III Students at Primary School”. Primary Education Journal (PRIMADONA) 2, no. 01 (October 30, 2025): 37–48. Accessed June 25, 2026. https://e-journal.unimudasorong.ac.id/index.php/primadona/article/view/4103.