<![CDATA[This study aims to improve the understanding of solar and lunar eclipses among sixth-grade students of SD Negeri 160 Palembang by utilizing the Project-Based Learning (PjBL) approach. The research method applied was Classroom Action Research (CAR) as described by Kemmis and McTaggart, which was carried out in two different cycles. Participants in this study consisted of 31 students. Data were obtained through observation and assessment activities, which were then analyzed using qualitative and quantitative methods. The results showed that the use of PjBL improved the understanding of the eclipse concept among students. Initially, the average student achievement score was 70.90, which increased to 75.65 at the end of the first cycle and further increased to 80.90 at the end of the second cycle. The learning completion rate also increased from 45% to 82%. The PjBL approach effectively motivated students to engage positively, cooperate, and show enthusiasm throughout the learning experience.]]>
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