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“PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN HASIL BELAJAR PESERTA DIDIK MATA PELAJARAN MATEMATIKA SMP NEGERI 13 SURABAYA”, JMER, vol. 2, no. 1, pp. 17–22, Jul. 2023, Accessed: Nov. 22, 2024. [Online]. Available: https://journalng.uwks.ac.id/jmer/article/view/93