Low student achievement in Indonesian language is attributed to the use of conventional teaching methods and the lack of interactive learning media. This study aims to determine the effect of using Vaipen learning media on the learning outcomes of fourth-grade students in Indonesian language at SDN Gayaman Mojokerto. This study employed a quantitative approach using a pre-experimental design in the form of a one-group pretest-posttest design. The study sample consisted of 25 students. Data collection was conducted through tests and observations. Data were analyzed descriptively and inferentially using SPSS version 25. The results showed that the mean pretest score was 44.8 and the mean posttest score was 90.8, indicating an improvement in student learning outcomes following the use of the Vaipen learning media. The results of the Shapiro-Wilk normality test showed that the pretest data were normally distributed with a significance value of 0.111, while the posttest data were not normally distributed with a significance value of 0.000. Therefore, hypothesis testing proceeded using a non-parametric test, specifically the Wilcoxon Signed-Rank Test. The test results showed a Z-value of -4.432 with a significance level of 0.000 < 0.05, so H₀ was rejected and H₁ was accepted. Thus, it can be concluded that the use of the Vaipen learning media has a significant effect on the learning outcomes of fourth-grade students in the subject of.
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