Nguyen Mau Duc, Dang Thanh Tra, Nguyen Nhat Linh, Nguyen Thi Anh Thu. ENHANCING TEACHERS’ DIGITAL COMPETENCE THROUGH A DIGITAL LEARNING RESOURCE ECOSYSTEM FOR THE “SUBSTANCES AND TRANSFORMATION OF SUBSTANCES” MODULE IN GRADE 9 NATURAL SCIENCE. HNUE JoES [Internet]. 2026 Oct. 12 [cited 2026 Oct. 14];71(6):75-8. Available from: https://hnuejs.edu.vn/es/article/view/1497