@thesis{thesis, author={Anita Anita}, title ={IMPROVING STUDENTS’ VOCABULARY USING YOUTUBE SHORT MOVIE OF THE SECOND GRADE STUDENTS OF SMA N 1 GUBUG}, year={2022}, url={http://eprints3.upgris.ac.id/id/eprint/3016/}, abstract={Anita. 2022. ?Improving students? vocabulary using YouTube short movie of the second grade of SMA N 1 Gubug?. Final Project, English Education Study Program, Faculty of Language and Arts Education, Universitas PGRI Semarang. Advisor I: Dr. Jafar Sodiq, M.Pd., Advisor II: Siti Musarokah, S.Pd., M.Hum. Vocabulary is central to English language teaching and the basic component to master all four basic skills. The purposes of this research were to find out students? vocabulary mastery of the second grade students of SMA N 1 Gubug before and after being taught using YouTube Short movie, to find out significant difference on the vocabulary mastery of the second grade students of SMA N 1 Gubug before and after being taught using YouTube short movie, and to find out the responses from students toward YouTube short movie in improving vocabulary mastery of the second grade students. The researcher used pre experimental design. The number of sample was 35 secnd grade students of senior high shool. The data was gained from pre test, post-test, and questionnaire. The result of pre test showed that mean of total students? pre-test score is 49,8. It means that before treatment students' vocabulary mastery is categorized as very bad. After using YouTube short movie mean of total post-test score of students is 82,5 it was categorized as very good. Based on the calculation, the results of mean of pre-test and post-test was 32,629, standard deviation was 9,897, standard error was 1,673, and t-test was 19,505 so, there is significant difference on the vocabulary mastery and after being taught using YouTube short movie. Then, total score of the questionnaire responses from students was 65.30, with an average total score of 3.27. It indicated that students' responses to YouTube short movie to improve their vocabulary were very positive. Based on this data, the researcher stated that YouTube short movie is effective to improve students? vocabulary. Keywords; improving, vocabulary, YouTube short movie.} }