THE EFFECTIVENESS OF USING HELLO ENGLISH APPLICATION TOWARDS STUDENTS’ VOCABULARY MASTERY AT THE VII GRADE OF MTS MIKSYAFUL ULUM MOJOKERTO

Falevi, A.M.Y. Student ID Number. 12203193097. 2023. The Ef ectiveness Of Using Hello English Application towards Students Vocabulary Mastery at the VII Grade of MTs Miksyaful Ulum Mojokerto. Thesis. English Department. Faculty of Tarbiyah and Teaching Training. State Islamic University (UIN) Sayyid Ali Rahmatullah Tulungagung. Supervisor: Dr. Dwi Astuti Wahyu Nurhayati, S.S., M.Pd. Keyword: Hello English Application, Vocabulary Mastery Vocabulary is a important component in learning a language, especially English. Without adequate vocabulary mastery, learning English is not successful. In an effort to enrich students' vocabulary mastery, interesting and innovative media were needed so that students not easily feel lazy and bored and more motivated to improve their vocabulary mastery. One of the interactive media that could be used to make it easier for students to learn vocabulary is to use the Hello English application. The Hello English application is an application that easily accessible anytime and anywhere via a mobile phone. This application was a basic supporting application in learning English which provides various kinds of English lessons, English dictionaries, games as well as various activities and other interesting features so that it could be increase knowledge, especially English vocabulary for the users. The formulation of the problem in this study was “Is there any significant difference scores between students' vocabulary mastery before and after being taught using the Hello English Application in the seventh grade of MTs Miksyaful Ulum Mojokerto?. Based on the formulation of the problem, the objective of this study was to know about the significant difference score of the students' vocabulary mastery before and after being taught by using the Hello English application at the seventh grade of MTs Miksyaful Ulum Mojokerto. This research was used an Pre-experimental design with a quantitative approach. The sample used was seventh grade of MTs Miksyaful Ulum Mojokerto which consisted of 25 students. In this study, the data collection method was pre-test, treatment, and post-test. Before conducting the test in the experimental class, the test was tryout in another class to calculate the validity and reliability. The results of the pre-test and post-test of the experimental class were analyzed using the Paired Sample T-Test with a tool in the form of SPSS 26. The results of the data analysis showed the results of this study before being given treatment the mean of students score was 71.84 and after given treatment the score was 85.12. Then the statistical data obtained by calculating the t-test as follows: the significance value (2-tailed) is 0.000, then sig. (2-tailed) = 0.000 < 0.05. Based on the results of the analysis, there is a significant difference in mean score before and after being given treatment using the Hello English application. So it can be concluded that the Hello English application is effective used in teaching vocabulary mastery