The Effect of Duolingo Application on the Students’ Achievement in Vocabulary

Abstract

This study was carried out to find out the students’ achievement in vocabulary using Duolingo Application. The descriptive quantitative methods was applied to describe the data. The population of this research was the second class of Madrasah Tsanawiyah Negeri 3 Medan, which was divided into the experimental and control class and the total of the sample was 73 students. The researcher gave 25 questions about vocabulary to collect the data in pre-test and post-test. T-test formula was used by the researcher to analyze the data. In this research, it was found that the mean of pre-test score in experimental class was 57.30 and in control class was found 49.56. Meanwhile, the mean of post-test score which found in experimental class was 82.49 and in control class was 70.22. It can be counted from the students’ score that tcount was 3.864, whereas the ttable was 1.993 for = 0.05 with the degree of freedom ( ) 71. It means that tcount was higher than ttable (3.864 > 1.993). So, alternative hypothesis (Ha) was accepted and null hypothesis (Ho) was rejected in this research. In an addition to this result, using of Duolingo Application had significant effect as media in English teaching learning process. In another instrument was giving questionnaire to measure students’ perception toward the using of Duolingo Application and the researcher was found out that most of students were agree toward using Duolingo Application could be made them more interested in English teaching learning process especially when learning vocabulary. In this term, it can be concluded that none of students who responded disagree or strongly disagree toward the questionnaire that have given by the researcher