HUY, Tran Quang et al. Designing Teaching Process for Stem Topic “Traffic Signal Lights” for Upper-secondary School Students. VNU Journal of Science: Education Research, [S.l.], v. 38, n. 2, may 2022. ISSN 2588-1159. Available at: <https://js.vnu.edu.vn/ER/article/view/4570>. Date accessed: 19 apr. 2024. doi: https://doi.org/10.25073/2588-1159/vnuer.4570.