The Influence of the Discovery Learning Model on the Learning Outcomes of Grade III Students in the Indonesian Language Subject at UPTD SDN 124398 Pematangsiantar

This study aims to determine the effect of the Discovery Learning learning model on the learning outcomes of third-grade students in the Indonesian Language subject at the UPTD of SD Negeri 124398 Pematangsiantar in the 2025/2026 Academic Year. The study used a quantitative approach with a one-group pre-test post-test design. The subjects of the study were 20 students who were given an initial test (pre-test) and a final test (post-test). The research instrument was a multiple-choice test consisting of 20 questions that had been tested for validity and reliability. The results showed a significant increase in the average score of students from 59.25 in the pre-test to 84.75 in the post-test, with the number of completeness increasing from 7 to 19 students. The paired sample t-test produced a t-value of 7.216 with a significance of 0.000 (less than 0.05), so the alternative hypothesis was accepted. Thus, it can be concluded that the application of the Discovery Learning model has a positive and significant effect in improving the Indonesian language learning outcomes of grade III students at the school.