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The role of Pronunciation English Learning Applications in Vietnam: An experimental study

English pronunciation teaching and learning are essential in international integration and globalization. Speaking applications were born to support teaching and learning English pronunciation. Combined with the Task-Technology Fit theory, this study used an experimental method to evaluate three methods of English pronunciation teaching and learning for university students including, learning directly with teachers in class, self-study using the mobile app, and a combination of both of them. In addition, the study also built a questionnaire based on two characteristics mentioned in the TTF, namely task characteristics and technology characteristics, specifically, pronunciation English learning applications characteristics and English pronunciation learning characteristics. The research results pointed out that a combination of teaching in class and application adoption for pronunciation is the best method. Finally, this research has contributed to English pronunciation teaching methods in countries using English as a second language and proposed managerial implications for companies producing English-speaking applications on mobile devices.