Eti Kus Endang, Wiryanto, Neni Mariana. The Impact of Concrete Media on Third-Graders’ Conceptual Understanding of Whole Number Addition. abjme [Internet]. 2026 Jun. 7 [cited 2026 Jun. 15];4(1):1-14. Available from: https://www.jurnal.staialbahjah.ac.id/index.php/abjme/article/view/1096