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THE EFFECT OF IMPLEMENTING PROBLEM-BASED LEARNING ON THE FIFTH GRADE STUDENTS’ HIGHER ORDER THINKING SKILLS ON HEAT AND TRANSFER THEME AT SDN KEPATIHAN 06 JEMBER. JPFKIP [Internet]. 2020 Aug. 25 [cited 2025 Dec. 18];9(4):482-91. Available from: https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/853