THE EFFECTIVENESS OF USING DUOLINGO APPLICATION IN IMPROVING STUDENTS’ ENGLISH VOCABULARY: A STUDY AT HASANUDDIN UNIVERSITY BATCH 2021

This research aims to analyze the effectiveness of the Duolingo application in increasing students‟ English vocabulary. This research was conducted using treatment for 6 days. The subjects of this study were Hasanuddin University students of batch 2021, they are 20 students who were interested in taking part in the treatment. The purpose of this study was to see the increase in students‟ English vocabulary after learning English using Duolingo and to find out how students‟ views of Duolingo as a language learning application in increasing English vocabulary. This research was conducted using two methods, each consisting of test scores and surveys. Data is collected through quantitative data. The results of this study indicate that the students' English vocabulary has increased. The average score of the pre-test was 58.75 and the post-test was 79. This indicated that the students‟ scores had increased from the pre-test to the post-test. Thedifference between the two tests is significant with a value of 20.25. From the data it can be concluded that there is a striking difference between student achievement before and after receiving treatment. In addition, this is more effective and interesting than conventional teaching in teaching English about vocabulary to students, especially students who have below average English skills.