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All Journal RESLAJ: Religion Education Social Laa Roiba Journal
Rahma Pebriyanti
Universitas Muhammadiyah Jakarta
Religion Economics, Econometrics & Finance Education Environmental Science Social Sciences

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Fondi In Focus: Boost Student’s Vocabulary Mastery in Senior High School Rahma Pebriyanti; M. Sofian Hadi
Reslaj: Religion Education Social Laa Roiba Journal Vol. 8 No. 1 (2026): RESLAJ: Religion Education Social Laa Roiba Journal
Publisher : Intitut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/reslaj.v8i1.10255

Abstract

This study investigates the effectiveness of the Fondi application in enhancing students’ English vocabulary acquisition at the senior high school level. A quantitative method with a pre-experimental one-group pre-test and post-test design was employed. The research was conducted at SMA Negeri 1 Rumpin, Bogor, involving 27 tenth-grade students selected through cluster sampling. Data were collected through pre-test and post-test instruments and analysed using the Wilcoxon Signed-Rank Test. The findings revealed that the mean pre-test score was 44.48, while the mean post-test score increased to 71.25. The statistical analysis yielded a Z value of -4.542 with a significance level of 0.000 (<0.05), indicating a significant difference between the pre-test and post-test results. Consequently, the alternative hypothesis (H1) was accepted, confirming that the Fondi application effectively enhances students’ vocabulary mastery.
Co-Authors M. Sofian Hadi