Ngo Minh Duc. A STUDY OF DESIGNING E-LEARNING LESSONS TO SUPPORT THE FLIPPED CLASSROOM THROUGH “CHAPTER 5: HALOGEN GROUPS” TO DEVELOP THE 10th GRADE STUDENTS’ COMPETENCE. jshe [Internet]. 2017Mar.28 [cited 2024May20];7(1):102-8. Available from: https://jshe.vn/index.php/jshe/article/view/754