Eti Kus Endang, Wiryanto, and Neni Mariana. “The Impact of Concrete Media on Third-Graders’ Conceptual Understanding of Whole Number Addition”. AB-JME: Al-Bahjah Journal of Mathematics Education, vol. 4, no. 1, June 2026, pp. 1-14, doi:10.61553/abjme.v4i1.1096.