THE EFFECT OF USING DUOLINGO APPLICATION TO STUDENTS’ MASTERY VOCABULARY

Abstract

Ivan Octapriandy. 2023. The Effect of Using Duolingo Application to Student’s Mastery Vocabulary at Grade Tenth of Madrasah Aliyah Negeri Tanjungbalai, 2022 – 2023 Academic Year. Skripsi. English Education Study Program. Faculty of Teachers' Training and Education. Asahan University. Advisor: Dian Anggraini Harahap, S.Pd, M.HumThis research was intended to find out the empirical evidence of the students’ achievement in mastery vocabulary by using Duolingo application at the X grade of MAN Tanjungbalai. This research was quantitative research. The population of this research was all the students of class X of MAN Tanjungbalai. Samples of this research were taken from 30 students of experimental group (class X 1) and 30 students of control group (class X 2). The instrument for collecting data was a test. After analyzing the data, the writer got; (1) The students’ achievement in mastery vocabulary by using Duolingo application got the mean 81,33 and standard deviation was 5,04; (2) The students’ achievement in mastery vocabulary by using conventional method got the mean 78 and standard deviation was 4,51. The value of t-observed was 2,729 and that of t-table was 2,009. So, the value of t-observed was higher than that of t-table, it means that there was significant effect of using Duolingo application on students' achievement in mastery vocabulary. Keywords: Duolingo, Vocabulary, Word