Thi Cuc N, Phuong Lan N, Khanh Ly K, Thi Hien Mai N, Hong Ngoc D, Thi Lan Anh V. “LITTLE SECRET” APP DESIGN: A CONSULTATION AND SUPPORT TOOL FOR PRIMARY SCHOOL STUDENTS. HNUE Journal of Science: Educational Science. 2024;69(5):66-76. doi:10.18173/2354-1075.2024-0118