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Rejeki IKS, Wantoro J. PENINGAKATAN KEAKTIFAN BELAJAR MELALUI PENERAPAN MODEL PROBLEM BASED LEARNING DALAM KEGIATAN PEMBELAJARAN PADA SISWA KELAS II. JRPP [Internet]. 2024May7 [cited 2024Nov.26];7(2):5267-73. Available from: http://journal.universitaspahlawan.ac.id/index.php/jrpp/article/view/27758