Rahadi, G., N. Avana, and Apdoludin. “Mathematics Learning Improvement Through Example-Non-Example With Flannel Board: Peningkatan Pembelajaran Matematika Melalui Contoh Dan Non-Contoh Dengan Papan Flanel”. Academia Open, vol. 10, no. 2, Aug. 2025, p. 10.21070/acopen.10.2025.11871, https://acopen.umsida.ac.id/index.php/acopen/article/view/11871.