Le Ha Mi T, Thu Phuong H, Anh Tu N, Tra My L. APPLYING THE PRINCIPLES OF REALISTIC MATHEMATICS EDUCATION TO DESIGN WORD EXERCISES INTEGRATING MORAL EDUCATION THEMES FOR FIFTH-GRADE STUDENTS. HNUE Journal of Science: Educational Science. 2025;70(4):165-175. doi:10.18173/2354-1075.2025-0080