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Effectiveness of Using Duolingo for learning Vocabulary of English-majored students in HUFI  \nLe Pham Phu Vinh  \n[Email: phuvinh.050999@gmail.com](Email: phuvinh.050999@gmail.com)  \na Faculty of Foreign Languagess, Ho Chi Minh City University Of Food Industry, Vietnam  \nAbstract  \nWith the development of technology in the 4.0 industrial era, many software and apps are created in the market which is used for educational purposes. Using software and apps is an effective way to help students learning vocabulary easily and conveniently. One of the best apps is Duolingo-An effective app for learning vocabulary. This research aims to evaluate the effectiveness of using Duolingo in learning vocabulary. A questionnaire consists of 10 questions that are used for 30 English-majored students in HUFI to answer. Then, evaluate the effectiveness based on the result of the questionnaire. The questionnaire’s result gave an expected result that nearly 85% of students said that using Duolingo is effective, very convenient, and easy to learn vocabulary. Besides, learners are more motivated in learning vocabulary, help students learn vocabulary easily with many excited topics. This study may help the students find a suitable app to learn English in general and vocabulary in particular.  \nKeywords: Duolingo, Apps, Vocabulary, Method, Learning.  \n1. Introduction  \nAn important thing about learning English is learning and mastering vocabulary. If learners cannot master their vocabulary, they often have some difficulty to understand the language and use it. Many researchers found that between vocabulary and grammar, vocabulary is more important. Carter & McCarthy (2014) stated that a person who masters vocabulary is a person who can use words and understand the meaning of them. Vocabulary is an important part of English. It is the basis for the development of four skills in English: Listening, Reading, Speaking, and Writing (UKEssays, 2016) . In learning English, learners need to know about vocabulary if they want to use it or express their own ideas. Learners who lacks of vocabulary often have difficult to learn English and understand the meaning of words. Therefore, learners need to find a way to improve their vocabulary. Learning English vocabulary by using software and other apps is a good way, especially Duolingo. There are four reasons for learning English from software and apps: Convenience, economy, fun, and variety (Darlene, 2018) . This study aims to help the student answer the question: Will Duolingobe effective? Can it help learners learning vocabulary? And decide on using this for learning vocabulary. Besides, with the implementation of this study, English learners can find an effective way to learn vocabulary or using this method together with the other method for the best result.  \n2. Literature review  \n2.1 The Nature of Vocabulary  \nWorkshop on Innovation in Language Teaching and Learning – ISBN: 978-1-71674-888-2  \na. The Definition of Vocabulary  \nVocabulary is very important in the field of learning English. Richards & Renandya (2002) says that vocabulary is the basic elements of language. It proves for the learner’s using language and how well learners speak, listen, read, and write. Without vocabulary and strategies to learn a new word, from making or use language learning opportunities around them such as listening to music, reading newspapers, using the language in daily life, or watching television (p.255) . According to Nunan (1991), vocabulary is difficult to acquire in the learning process in the classroom. Vocabulary is the core of the English language because without vocabulary, learners cannot express their own ideas and cannot understand others. For instance, students often get difficulties in understanding the whole meaning of the text because they do not know the meaning of words in the text. In speaking, it is too hard to commun","cbCaie4dOY3Jy9N2","https://ap.wps.com/l/cbCaie4dOY3Jy9N2","pdf",181682,13,"English","# Abstract\n# 1. Introduction\n# 2. Literature review\n## 2.1 The Nature of Vocabulary\n## 2.2 Duolingo","[{\"question\":\"What is the main purpose of the study?\",\"answer\":\"The study evaluates how effective Duolingo is for learning vocabulary among English-majored students at HUFI.\"},{\"question\":\"How is the effectiveness of Duolingo measured?\",\"answer\":\"Effectiveness is measured using a questionnaire with 10 questions answered by 30 English-majored students.\"},{\"question\":\"What do the questionnaire results indicate about Duolingo?\",\"answer\":\"Nearly 85% of students report that Duolingo is effective, very convenient, easy to learn, and motivating, with many engaging topics.\"}]","The Effectiveness of Using Duolingo for Learning Vocabulary of English-majored Students in HUFI - Abstract, Introduction, and Literature Review | PDF",1790599486,33]