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NO.2. NOVEMBER 2024  \nE-ISSN. 2721-205X  \nTHE EFFECT OF USING DUOLINGO APPLICATION AS TEACHING MEDIA TO IMPROVE VOCABULARY MASTERY OF ELEVENTH GRADERS  \nReza Artha Mevia1, Ahmad Thoyyib Shofi2, Lailatul Masruroh3  \nEnglish Language Education Program  \nUniversitas Qomaruddin  \n[Email:](Email:1rezaartham1802@gmail.com)[1](Email:1rezaartham1802@gmail.com)[rezaartham1802@gmail.com](Email:1rezaartham1802@gmail.com), [2](2zhofi.thoyyib@gmail.com)[zhofi.thoyyib@gmail.com](2zhofi.thoyyib@gmail.com), [3](3lailatulmasruroh@uqgresik.ac.id)[lailatulmasruroh@uqgresik.ac.id](3lailatulmasruroh@uqgresik.ac.id)  \nABSTRACT  \nThis research examines the effectiveness of the Duolingo application in enhancing the vocabulary achievement of eleventh-grade students. Using a quasiexperimental design, the study compares the vocabulary acquisition of students who used the Duolingo app with those who did not. The experimental group received the Duolingo app as treatment, while the control group received conventional instruction without additional intervention. Pre-tests and post-tests were administered to both groups to assess vocabulary skills before and after the treatment. The study was conducted at SMA Nusantara, involving 31 students from eleventh grade A and B. Data collection was taken from multiple-choice tests to measure vocabulary acquisition. Statistical analyses, including independent t-tests, were performed using SPSS 26.0 to compare the vocabulary mastery of both groups. Results indicate that students in the experimental group, who used the Duolingo app, demonstrated significantly higher vocabulary scores compared to the control group. The students who have been taught the Duolingo application get better grades than those who have been taught the traditional method. The findings highlight the efficacy of incorporating technology, such asthe Duolingo app, in language learning to improve vocabulary acquisition among students. Further research could explore the long-term effects of using Duolingo and its applicability in diverse educational settings.  \nKeywords: Vocabulary, Vocabulary mastery, Duolingo game.  \nINTRODUCTION  \nEnglish as a foreign language in Indonesia is taught from primary school to university level, but some students may not realize the importance of mastering vocabulary (Siregar, 2019) . Vocabulary is the basic language aspect that must be mastered before mastering English skills (Nenden Sr, 2021) . Technology allows students to break away from textbooks and discover real-life English materials that spark their interest and boost their language learning. However, with the  \nJ-SHELVES OF INDRAGIRI (JSI) VOL.6. NO.2. NOVEMBER 2024  \nE-ISSN. 2721-205X  \nadvancement of technology, students often rely excessively on translators, leading to laziness and the inability to comprehend English without assistance.  \nThe use of modern technology and media in teaching English includes interactive platforms, multimedia resources, and digital tools (Mofareh, 2019) . This methodology puts a spotlight on communication, real-life situations, and the practical application of language abilities. Students can take advantage of an extensive collection of genuine materials, engage in practicing speaking and listening skills through interactive exercises, and promptly receive feedback on various digital platforms (Ameri, 2018) .  \nIn the context of SMA Nusantara Bungah, eleventh graders have the same problems when it comes to learning English (Alimin, 2022) . They do not have a rich vocabulary and some even dislike learning English. Most students have difficulty remembering words and rely too much on Google Translate. Internal factors such as lack of rich vocabulary and reliance on Google Translate, as well as external factors like limited exposure to English outside the classroom, minimal access to English-speaking communities or resources, and a lack of English language immersion opportunities, contribute to diff","cbCaicj7Ua82OiRy","https://ap.wps.com/l/cbCaicj7Ua82OiRy","pdf",613837,15,"English","# Abstract\n# Introduction\n# Literature Review\n## Definition Vocabulary","[{\"question\":\"What is the main purpose of the study?\",\"answer\":\"To examine how Duolingo affects eleventh graders’ vocabulary mastery compared with conventional instruction.\"},{\"question\":\"How was the research conducted?\",\"answer\":\"A quasiexperimental design was used, with pre-tests and post-tests for both experimental and control groups.\"},{\"question\":\"What data and analysis methods were used to measure vocabulary?\",\"answer\":\"Vocabulary acquisition was measured using multiple-choice tests, and independent t-tests were conducted using SPSS 26.0.\"}]","THE EFFECT OF USING DUOLINGO APPLICATION AS TEACHING MEDIA TO IMPROVE VOCABULARY MASTERY OF ELEVENTH GRADERS | PDF",1790612827,38]