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EFFECT OF PROBLEM BASED LEARNING MODEL AND MOTIVATION LEARNING ON LEARNING OUTCOMES IN CLASS X SMA SINAR HUSNI. JPF Unimed [Internet]. 2016 Jun. 1 [cited 2026 Apr. 6];5(1):32-7. Available from: https://jurnal.unimed.ac.id/2012/index.php/jpf/article/view/3704