The Effectiveness of Jigsaw Learning Method to Enhance Vocabulary Building at SMK Muhammadiyah 2 Ajibarang by Flashcard

Abstract

This study provides practical insights for educators to implement cooperative learning methods support by engage media to enhance English vocabulary learning. This study aims to investigate the effectiveness of the jigsaw learning method combine with flashcards in enhance English vocabulary building for eleventh-grade students at SMK Muhammadiyah 2 Ajibarang. The research a quasi-experimental design involves an experimental group that received treatment use the jigsaw method and flashcards, and a control group that experienced conventional teaching methods. The instruments use to collect data are pre-tests and post-tests consisting of 15 multiple-choice questions based on explanation text materials. Data are analysed use SPSS 25, includes normality and homogeneity tests, followed by hypothesis testing with an independent t-test. The results revealed a significant improvement in the experimental group’s vocabulary mastery, with an average post- test score of 76.62 compared to 68.84 in the control group. The hypothesis test showed a significance value of 0.026, which is less than 0.05, indicating that the null hypothesis is rejects and the alternative hypothesis accepted. Therefore, it can be concluded that the jigsaw learning method use flashcards is effective in enhance students' vocabulary mastery on explanation text materials in the eleventh grade at SMK Muhammadiyah 2 Ajibarang in the 2025/2026 academic year.

Keywords: The Effectiveness, Jigsaw, Vocabulary, Flashcard, Quasi-Experimental