<![CDATA[This study aims to determine the level of fourth-grade students' conceptual understanding of Natural and Social Sciences (IPAS) at SD Muhammadiyah 3 Makassar before and after the implementation of the Teams Games Tournament (TGT) model assisted by a Board Game, and to analyze differences in conceptual understanding after the treatment. The study employed a quantitative approach using a pre-experimental method with a one-group pretest-posttest design. The sample consisted of 20 fourth-grade students selected through saturated sampling. Data were collected using pretest and posttest measures as well as a learning implementation observation sheet. The data were analyzed using descriptive and inferential statistics with SPSS. The results showed that the mean pretest score of 55.50 increased to 79.00 on the posttest, representing an increase of 23.50 points. The number of students who achieved a score of 75 or above increased from 1 student (5%) to 13 students (65%). The Shapiro-Wilk test indicated that the pretest and posttest data were normally distributed, with significance values of 0.291 and 0.270, respectively. The Paired Samples t-Test yielded t = -21.476, df = 19, and Sig. (2-tailed) = 0.000 < 0.05. Therefore, there was a significant difference in students' conceptual understanding of IPAS before and after the implementation of the Board Game-assisted TGT model]]>
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