<![CDATA[This study aims to analyze the effectiveness of using number card media in improving students’ learning outcomes on number pattern material. The research method employed was an experimental approach with a one-group pretest-posttest design involving 23 students as research subjects. The research instrument was a learning outcome test that had been validated through expert judgment and tested for reliability using Cronbach’s Alpha, which obtained a value of 0.682 categorized as moderate. Data were analyzed descriptively and inferentially using normality and homogeneity tests, paired sample t-test, and N-Gain calculation. The results showed a significant improvement between the pretest scores (mean = 22.78) and posttest scores (mean = 84.30), with the paired sample t-test indicating a sig. (2-tailed) value smaller than the significance level (0.000 ≤ 0.05), suggesting a significant difference. The average classical N-Gain of 0.79 was categorized as high, with 74% of students achieving improvement in the high category and 26% in the moderate category. These findings demonstrate that number card media plays a significant role in facilitating students to construct an understanding of abstract concepts through concrete learning experiences, in line with Piaget’s and Bruner’s constructivist theory.]]>
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