(1)
Le Hoai Thong, N.; Anh Tuong, H. USING GEOGEBRA IN TEACHING CONES TO DEVELOP THE COMPETENCY USING MATHEMATICAL AIDS AND TOOLS FOR GRADE 9 STUDENTS. HNUE Journal of Science: Educational Science 2024, 69 (5B), 60-71. https://doi.org/10.18173/2354-1075.2024-0135.