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Thirty students participated in pre-test and post-test measurements. Learners practiced Duolingo for 30 days with a target of 20 XP per day. Vocabulary tests and questionnaires were used to collect data. Post-test results indicated higher scores than pre-test scores, demonstrating a positive effect on vocabulary mastery and supporting Duolingo’s role as an engaging modern learning tool.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/the-effect-of-using-duolingo-application-on-students-vocabulary-mastery/418296/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/the-effect-of-using-duolingo-application-on-students-vocabulary-mastery/418296.png","ImageObject",300,407,{"name":92,"@type":93},"Jiven","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-31","2026-09-28",true,{"@type":102,"interactionType":103,"userInteractionCount":39},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of this study on Duolingo?","Question",{"text":112,"@type":113},"To determine whether using the Duolingo application affects students’ vocabulary mastery and to identify its effectiveness in improving vocabulary learning among English Education students.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How was the study conducted?",{"text":117,"@type":113},"The study used a quantitative experimental design with pre-test and post-test. 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The participants were 30 students from the English Education Department. Students practiced Duolingo for 30 days with a target of 20 XP per day. Data were collected through vocabulary tests and questionnaires.\u003Cbr>Results/Findings\u003Cbr>The results showed that students’ post-test scores were higher than their pre-test scores, indicating improvement in vocabulary mastery after using Duolingo. The average posttest score was higher than the pre-test score, proving that Duolingo had a positive effect on vocabulary learning.\u003Cbr>Implications\u003Cbr>Teachers can integrate Duolingo into English teaching as a modern and engaging learning tool. It can motivate students, provide equal practice opportunities, and support independent vocabulary learning through mobile devices. |\n| Keywords: Duolingo application; vocabulary mastery; English learning; mobile learning; technology in education |  |\n\n1. Introduction  \nDuolingo is effective because it teaches fundamental knowledge and crucial English abilities. The acquisition of vocabulary in Duolingo is the fundamental and most significant skill. There are numerous levels and vocabulary teaching techniques in the application that might aid pupils in their language learning. In this sense, vocabulary is the most crucial and fundamental component of learning a language, especially English. Students learning English should be familiar with vocabulary since doing so will encourage them to utilize the language to communicate and convey their ideas (Muddin, 2018) .  \nThere are language elements like vocabulary, grammar, and pronunciation that connect those four primary skills. This study focuses on vocabulary among all of those linguistic constituents. It is impossible to separate vocabulary development from other areas of English language study. The foundational skill that learners must master before they may advance to other language proficiency levels, such as speaking, listening, reading, and writing, is vocabulary. The learners' vocabulary needs to be extensive in order to have strong English competence. Vocabulary is an essential part of language ability and contributes significantly to how well language learners speak, listen, read, and write. Lacking a large vocabulary and learning techniques, they are unable to make use of the many chances for language learning that are available to them, including listening to the radio, speaking with native  \nRamadhani et al. Journal of Language Learning and Assessment Vol. 4, No. 2, December 2026  \nspeakers, reading, and watching television. It is impossible to separate vocabulary development from other areas of English language study.  \nIf students lack vocabulary, learning English will be difficult. Teachers play a crucial role in ensuring that students learn effectively. Teachers must pay attention to developing learners' vocabularies. Teachers are expected to employ creative methods and media that inspire pupils to learn language. The majority of educat","cbCaikACb6FJJHfB","https://ap.wps.com/l/cbCaikACb6FJJHfB","pdf",260589,"English","# Introduction\n## Vocabulary as a fundamental skill\n## Duolingo as a language-learning tool\n# Methodology\n## Participants and study design\n## Practice schedule and data collection","[{\"question\":\"What is the purpose of this study on Duolingo?\",\"answer\":\"To determine whether using the Duolingo application affects students’ vocabulary mastery and to identify its effectiveness in improving vocabulary learning among English Education students.\"},{\"question\":\"How was the study conducted?\",\"answer\":\"The study used a quantitative experimental design with pre-test and post-test. Thirty students practiced Duolingo for 30 days, targeting 20 XP per day.\"},{\"question\":\"What were the key findings?\",\"answer\":\"Students’ post-test scores were higher than their pre-test scores, indicating improvement in vocabulary mastery after using Duolingo and showing a positive effect on vocabulary learning.\"}]","The Effect of Using Duolingo Application on Students’ Vocabulary Mastery | PDF",1790612707,15]