Science learning in elementary schools is often dominated by conventional methods, resulting in low science literacy and limited student participation. This study aims to examine the effectiveness of practicum-based Project Based Learning in improving science literacy and student participation. A quantitative approach with a one-group pretest–posttest design was employed involving 34 fifth-grade students. Data were collected through science literacy tests and observation sheets of student participation. The results showed a significant improvement in students’ science literacy, with the average score increasing from 68.41 to 86.76 and an N-Gain score of 0.58, categorized as moderate. In addition, student participation improved as reflected in increased engagement during discussions, experiments, and project activities. These findings indicate that practicum-based Project Based Learning provides meaningful learning experiences and effectively enhances both science literacy and student participation.
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