This study aims to determine the effect of the Board Daily Activities (BDA) learning medium on student learning outcomes regarding the topic "Living in Harmony with Nature" in the third grade at Dwikora Private Elementary School. The study employs a quantitative approach using a quasi-experimental method and a non-equivalent control group design. The research subjects consisted of an experimental class using the BDA medium and a control class using the STAD learning model. The results indicate that the average pre-test scores were 60.00 for the control class and 57.29 for the experimental class, showing that the initial proficiency levels of both classes were relatively comparable. Following the intervention, the average post-test score for the control class rose to 78.75, whereas the experimental class saw a greater increase to 87.29. Hypothesis testing yielded a 2-tailed significance value of 0.0005, indicating a significant effect of the BDA medium on student learning outcomes. The BDA medium proved capable of fostering a more engaging, interactive, and enjoyable learning experience while helping students grasp the material in a more concrete manner. Consequently, the Board Daily Activities medium is a suitable alternative for Science and Social Studies (IPAS) instruction in elementary schools to enhance student learning outcomes.
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