<![CDATA[This study aims to improve the learning outcomes of fifth-grade students at SD Negeri 060912 Medan Denai on the topic of the human digestive organs through the implementation of the Problem Based Learning (PBL) model. The research employed Classroom Action Research (CAR), conducted in two cycles, each consisting of planning, action, observation, and reflection phases. The research subjects were 29 fifth-grade students. Data were collected through observation, interviews, documentation, and learning achievement tests. The findings showed an improvement in student learning outcomes in each cycle. In the first cycle, the average score was 68.27 with a completeness rate of 68.97%, while in the second cycle, it increased to 74.65 with a completeness rate of 82.76%. Besides score improvement, students also showed increased engagement, motivation, and participation during the learning process. Teachers also reported positive experiences with the PBL model in enhancing the quality of instruction. Therefore, the application of the Problem Based Learning model proved effective in improving student learning outcomes and engagement on the topic of the human digestive organs.]]>
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