The Effectiveness Of Using Duolingo Application To Improve Students’ Vocabulary At the Seventh Grade Of SMP Negeri 02 Pontianak

Abstract

Peni Nurhaliza, 2024. “The Effectiveness Of Using Duolingo Application To Improve Students’ Vocabulary At the Seventh Grade Of SMP Negeri 02 Pontianak”. Thesis (S1). Tadris English Study Program. Faculty of Tarbiyah And Teacher Training. State Institute for Islamic Studies Pontianak. Vocabulary was part of language learning and very important in a foreign language learning. Lacking vocabulary, student were not able to convey their ideas. Vocabulary was a key to understand English. To this point, Duolingo Application was implemented to improve students’ vocabulary mastery with joys. The research problems were as follows. How is the students’ achievement in vocabulary after using Duolingo Application? Are there any effects of Duolingo Application on the students’ achievement in vocabulary? The purpose of this research was to improve students vocabulary and find out the effects of using Duolingo Application on the seventh graders of SMP Negeri 02 Pontianak. In addition, using Duolingo Application could make students excited and interested in learning and practicing their English, especially vocabulary and also accelerated whether it would be helpful and enjoyable. The research design was in this research was quasi-experimental design with quantitative approach. The population of this research was the seventh grade of students at SMPN 02 Pontianak. The sample involved VII H consist of 25 students as the experimental group and 25 students as the control group from VII G. This research used 20 questions as the instrument. The writer administered the test instrument both in experimental and control groups for pre and post tests. The time allocation for both tests was 60 minutes. The write used T-test formula through SPSS 25 as the technique of data analysis. The finding showed that the mean achievement of experimental class was higher than the mean achievement of the control class. The mean achievement of experimental class was 89.60 and 73.40 for the mean of the control group. The hypothesis was analyzed at significant level of 0.05, and the result showed that t-value was 6.630 and the sig.2-tailed 0.000. It means that hypothesis was accepted and Duolingo Application could be used to improve students’ achievement in vocabulary. It was concluded that the use of Duolingo Application could give a positive effect in improving students’ vocabulary on the seventh grade at SMP Negeri 02 Pontianak in academic year 2023/2024.