English words are challenging, and it will be difficult to avoid forgetting them. As the basic component of all languages, one of the components of English that students must acquire is vocabulary. Students wont be able to speak, write, read, or listen in English. Or, in other words, developing effective vocabularylearning strategies is essential to mastering English. In addition, there are linguistic elements such as pronunciation, grammar, and vocabulary that connect these four key skills. To solve this problem, the researcher is using the Duolingo application as a learning tool. The aim of this research was to find out whether or not first-grade students at SMAN 1 KEDIRI could significantly learn first-grade vocabulary through the use of Duolingo in the 2024 academic year.

Jihan , Nadia Farihatul .   (2024). The effectiveness of Using Duolingo on Students Vocabulary Mastery at SMAN 1 KEDIRI. IAIN Kediri