Zohra, Milda, and Mara Samin Lubis. “The Effect of PMRI’s Approach on Students’ Problem-Solving Ability in Geometry Topics Among Grade VII Students at SMP Negeri 1 Sipirok”. MaPan : Jurnal Matematika dan Pembelajaran 13, no. 1 (June 28, 2025): 103–120. Accessed July 1, 2025. https://journal.uin-alauddin.ac.id/index.php/Mapan/article/view/56483.