THI QUYNH MAI, Do; THI BICH DAO, Pham; THAI SON, Nguyen; THI NGOC TRAM, Ngo. RESEARCH ON DEVELOPING AND GUIDING THE USE OF ASSESSMENT STANDARDS FOR SCIENTIFIC COMPETENCY IN TEACHING NATURAL SCIENCES – ILLUSTRATED THROUGH THE TOPIC OF MATTER AND ITS TRANSFORMATIONS. Journal of Science Educational Science, [S. l.], v. 70, n. 1A, p. 29–42, 2025. DOI: 10.18173/2354-1075.2025-0018. Disponível em: https://hnuejs.edu.vn/es/article/view/731.. Acesso em: 16 mar. 2025.