1.
Nguyen Duc Son, Nguyen Duc Anh, Le Minh Nguyet. THE CURRENT STATUS OF MATHEMATICAL COMPETENCY AMONG GRADE 9 STUDENTS FROM SIX SECONDARY SCHOOLS IN HO CHI MINH CITY. HNUE JoES. 2026;71(6):107-117. doi:10.18173/2354-1075.2026-%x