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Saputro, H.B. and Hidayati , A.N. 2024. The effect of using korong calculating media on problem solving ability in calculating operations of multiple class II students of SD Muhammadiyah Klepu. Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika. 10, 1 (May 2024), 41-54. DOI:https://doi.org/10.29407/jmen.v10i1.20783.