Putri, Anggita Oktavina, and Fina Lutfiana. “PENGGUNAAN MEDIA PEMBELAJARAN OPPA UNTUK MENINGKATKAN PEMAHAMAN KONSEP MATEMATIS SISWA MTS [THE USE OF OPPA LEARNING MEDIA TO IMPROVE STUDENTS’ UNDERSTANDING OF MATHEMATICAL CONCEPTS IN MTS]”. JOHME: Journal of Holistic Mathematics Education 9, no. 2 (December 3, 2025): 272–286. Accessed December 10, 2025. https://ojs.uph.edu/index.php/JOHME/article/view/10278.