Implementation of A1 Mobile Learning Deutschtrainer Learning Media Against German Vocabulary Mastery for Class XI Students of SMA Negeri 1 Bone

Abstract
This study aims to determine the results of the application of learning media Mobile learning (Deutschtrainer A1) on the mastery of German vocabulary for class XI students of SMA Negeri 1 Bone. Deutschtrainer A1 is a learning medium in the form of a YouTube application and video developed by the Goethe Institut which combines aspects of listening, reading and writing and helps to practice basic vocabulary. This application is free to download for iOS and Android. In connection with this, this media is then applied to class XI students of SMA Negeri 1 Bone in the form of classroom action research. The subjects of this study were students of class XI SMA 1 Bone. The data was collected through tests which were analyzed descriptively qualitatively using the percentage technique. The results showed that the vocabulary mastery of students in the first cycle was 75% and included in the sufficient category, then there was an increase in the second cycle with a percentage of 88.33% and included in the very good category. This shows that during the learning process takes place in two cycles there is a very significan