ETI KUS ENDANG; WIRYANTO; NENI MARIANA. The Impact of Concrete Media on Third-Graders’ Conceptual Understanding of Whole Number Addition. AB-JME: Al-Bahjah Journal of Mathematics Education, [S. l.], v. 4, n. 1, p. 1–14, 2026. DOI: 10.61553/abjme.v4i1.1096. Disponível em: https://www.jurnal.staialbahjah.ac.id/index.php/abjme/article/view/1096. Acesso em: 15 jun. 2026.