ASSESSING THE EFFICACY OF DUOLINGO FOR ACQUIRING ENGLISH VOCABULARY SKILLS: EXPERIMENTAL RESEARCH

Lusi Purnama Sari; Tommy Hastomo; Eva Nurchurifiani

doi:10.20527/jetall.v6i2.17145

ASSESSING THE EFFICACY OF DUOLINGO FOR ACQUIRING ENGLISH VOCABULARY SKILLS: EXPERIMENTAL RESEARCH

Lusi Purnama Sari, Tommy Hastomo, Eva Nurchurifiani

Abstract

This research aimed to explore the effectiveness of Duolingo on students' vocabulary. The researchers used quantitative methodologies with a quasi-experimental design in this research. This research used two classes that consist of experimental class and the control class as the sample. Class X OTKP served as the experimental class for this study, whereas Class X BDP served as the control class. Forty-six students made up the group. To gather data, the researchers employed multiple-choice vocabulary exams with 40 items. To calculate the data analysis, the researcher used the t-test formula. The finding shows that H_a was approved based on the data analysis. The results showed that t_test 2,8 and t_table = 2,00 with a significance of 5% (0,05) and t_table 2,42 with 1% (0,01). It means that t_test > t_table and Ha was accepted. Therefore, the use of Duolingo is effective for teaching English vocabulary in the tenth grade at SMK Trisakti Jaya Bandar Lampung. Meanwhile, the mean score of students' vocabulary in experimental class is higher than the mean score of students' vocabulary in control class (72.6 > 67,52). The results demonstrate that Duolingo is the solution for the teacher to teach vocabulary at one of Vocational School in Bandar Lampung.

Keywords

Duolingo application; experimental research; vocabulary

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DOI: http://dx.doi.org/10.20527/jetall.v6i2.17145