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PENERAPAN MODEL PROBLEM BASED LEARNING DAN PROBLEM SOLVING TERHADAP HASIL BELAJAR IPA SISWA KELAS IV GUGUS SUDIRMAN. JS (JURNAL SEKOLAH) [Internet]. 14 April 2018 [dikutip 15 Juli 2026];2(2):60-8. Tersedia pada: https://jurnal.unimed.ac.id/2012/index.php/js/article/view/9515