HUYEN NGOC, Le; THAO LINH, Le; THUY DUNG, Vu; THI HA VY, Bui; THI THUY, Pham; THI BINH, Pham. TEXTBOOK ANALYSIS BASED ON MAHAFFY’S TETRAHEDRAL MODEL AND INSTRUCTIONAL PROPOSALS: THE CASE OF NITROGEN-CONTAINING COMPOUNDS IN GRADE 12 CHEMISTRY. HNUE Journal of Science: Journal of Educational Science, [S. l.], v. 71, n. 5, p. 144–154, 2026. DOI: 10.18173/2354-1075.2026-0077. Disponível em: https://hnuejs.edu.vn/es/article/view/1484. Acesso em: 10 sep. 2026.