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PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SISWA PADA MATERI SISTEM PENAPASAN MANUSIA DI SMP NEGERI 3 TONDANO. jsoscied [Internet]. 2025 May 6 [cited 2026 Apr. 16];8(1):57-66. Available from: http://jurnal.poltekstpaul.ac.id/index.php/jsoscied/article/view/914