INCREASING STUDENTS’ VOCABULARY MASTERY BY WATCHING CARTOON VIDEO AT SMP NEGERI 1 BELOPA

This research aims to determine whether using cartoon videos enhances the vocabulary mastery of eighth-grade students at SMP Negeri 1 Belopa. This study employs a pre-experimental design, specifically the One-Group Pretest-Posttest
approach, involving a single experimental group for pre-test and post-test assessments. The population of this study consists of all eighth-grade students at SMP Negeri 1 Belopa, totaling eighty students. Thirty students from the eighth grade were selected for the study during the 2023/2024 academic year. The analysis
of pre-test and post-test results reveals a significant improvement in students' vocabulary mastery after exposure to cartoon videos. The average pre-test score was 51.11, categorized as "Poor," while the post-test average increased to 58.88, falling under the "Fair" category. A paired t-test yielded a t-value of 4.108,
surpassing the critical t-table value of 2.045 at a significance level 0.000, indicating a statistically significant difference between pre-test and post-test results. Additionally, the correlation coefficient between the two tests was 0.866, demonstrating a strong positive relationship, whereby students who performed well
in the pre-test also tended to achieve higher scores in the post-test. Therefore, it is concluded that using cartoon videos as a learning medium effectively improves students' vocabulary mastery