This study aims to introduce a new method of learning called ‘Flipped Learning’, and explains how to use it while learning Korean grammar. And it showed examples with learning materials which were made by instructor. Originally ‘Flipped learning’ was used to teach of Engineering. It focuses on the learners. It consists of three steps: pre class, in class and after class. In the pre-class, students study by themselves. They can use textbooks, hand-outs and video-clips supplied by the teacher to help their study. During the class, firstly, the teacher checks their understanding of their study through quizzes and questions. And then the students ask questions. The teacher answers the questions, then he summarizes the most important points of the lesson. After that, students study with peers and complete their tasks. After class, students make up their lacking or deepen learning. In this study, Flipped Learning was adapted for a Korean grammar class which is a required class for undergraduate studies. Comparing the scores of quizzes and exams between before and after the applied flipped learning, the academic grades of students increased 28%. And it found that the grade of lowest level students has shown a significant improvement. Additionally students demonstrated an increases in satisfaction, comprehension and use of language. And students can learn more and enjoy their studying by carrying out the given tasks with peers. They can learn more from tasks, peers, and the teacher. Also it makes learning more enjoyable. (Hankuk University of Foreign studies)