<![CDATA[The problem underlying this study is the low learning outcomes of students in the topic of addition, which are still below average. One solution to address this issue is by using concrete and engaging learning media. This study aims to understand the impact of using the Cliff Board media on the learning outcomes of addition material in the second-grade students at SD Negeri 7 Merawang. The study uses a quantitative approach with an experimental design of Pre-Experimental Design using a One-Group Pretest-Posttest design. A total of 30 second-grade students from SD Negeri 7 Merawang participated as the subjects of this study. Data collection was carried out using a written test consisting of 7 essay questions. The study shows that the average pretest score was 49.13, while the average posttest score was 76.57, indicating an improvement of 27.44 in learning outcomes. Hypothesis testing using the paired-sample t-test showed a significance value of 0.001 < 0.05, thus Ha is accepted and H0 is rejected. Therefore, it can be concluded that there is a significant effect of using the Cliff Board media on the students' mathematics learning outcomes in the topic of addition in second-grade students at SD Negeri 7 Merawang.]]>
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