Truong Giang N, Mai Chi N, Trung Ninh T. DEVELOPING GRADE 6 STUDENTS’ COMPETENCE TO APPLY KNOWLEDGE AND SKILLS THROUGH STEM-BASED INSTRUCTION: A CASE STUDY ON THE TOPIC “ENERGY AND ITS TRANSFORMATION.” HNUE Journal of Science: Educational Science. 2025;70(5):179-188. doi:10.18173/2354-1075.2025-0102