DEVELOPING VOCABULARY MATERIALS THROUGH THE DUOLINGO APPLICATION

Abstrak

This study developed vocabulary materials based on the Duolingo app for English language learning for high school students in Indonesia using the ADDIE Research and Development (R&D) model. With a sample of 60 students, interactive materials utilizing Duolingo's gamification features, repetitive exercises, and visual elements were designed to improve vocabulary mastery. Results showed significant vocabulary score increases in the experimental group compared to the control group, supported by daily streaks and reward mechanisms that increased retention and learning motivation. These findings confirm Duolingo's effectiveness as a vocabulary development tool recommended for integration into technology-based curricula, with suggestions for further research exploring different languages and age groups.