MULYADI, Veri Ikra; HADI, Abdul; BANGSA, Kusik Kusuma. The Effectiveness of Rainbow Board Media in Enhancing Conceptual Understanding of Addition and Subtraction among Elementary Students. FIKROTUNA: Jurnal Pendidikan dan Manajemen Islam, [S. l.], v. 14, n. 2, p. 350–361, 2025. DOI: 10.32806/jf.v14i2.1374. Disponível em: https://jurnalalkhairat.org/ojs/index.php/fikrotuna/article/view/1374. Acesso em: 27 feb. 2026.