Manullang, T. R., S. F. Rabia and Endra Putra Raharja (2025) “Optimizing the PADI (Diagram Board) Learning Media to Improve Mathematics Learning Outcomes of Grade III Students at Primary School”, Primary Education Journal (PRIMADONA) , 2(01), pp. 37–48. Available at: https://e-journal.unimudasorong.ac.id/index.php/primadona/article/view/4103 (Accessed: 25 June 2026).