NGOC GIANG, Nguyen; THI THUY, Nguyen; THI NGA, Nguyen. APPLYING CONSTRUCTIVIST THEORY IN TEACHING THE TOPIC “SYSTEMS OF LINEAR INEQUALITIES IN TWO VARIAB LES” TO GRADE 10 STUDENTS. HNUE Journal of Science: Journal of Educational Science, [S. l.], v. 71, n. 5, p. 165–174, 2026. DOI: 10.18173/2354-1075.2026-0079. Disponível em: https://hnuejs.edu.vn/es/article/view/1451. Acesso em: 10 sep. 2026.