Saputro, Hengkang Bara, and Annisa Nur Hidayati. “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, no. 1 (May 31, 2024): 41–54. Accessed December 22, 2024. https://ojs.unpkediri.ac.id/index.php/matematika/article/view/20783.