Problem-based learning is a learning approach that presents contextual problems so that it stimulates students to learn. This classroom action research aims to increase students’ outcome of economy lesson by applying learning model Problem Based Learning (PBL). This research was conducted in class XII IPA 2 SMA Negeri 1 Pekutatan at second term in academic year 2021/2022 to 32 students. The research’s result shows at cycle 1, the mean score is 74,53 which was categorized good and mastery of learning outcomes achieve 68,75% classically. Meanwhile, at cycle 2, the mean score results 83,59 which was categorized good and mastery of learning outcomes achieve 93,75% classically. The result shows that the applying of Problem Based Learnng model can increase students’ outcome of economy lesson at class XII IPA 2 SMA Negeri 1 Pekutatan at second term in academic year 2021/2022.
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