Nguyễn Thị Hồng Thúy, and Trần Tuyến. “Designing a Lesson Plan Oriented Toward Developing Problem-Solving Competency for Fourth-Grade Students in Mathematics Teaching”. Journal of Technical Education Science 21, no. 03(V) (August 28, 2026): 98–109. Accessed September 10, 2026. https://jte.edu.vn/index.php/jte/article/view/2088.