NGUYỄN THỊ HỒNG THÚY; TRẦN TUYẾN. Designing a Lesson Plan Oriented Toward Developing Problem-Solving Competency for Fourth-Grade Students in Mathematics Teaching: Online First: 22/08/2026. Journal of Technical Education Science, [S. l.], 2026. DOI: 10.54644/jte.2026.2088. Disponível em: https://jte.edu.vn/index.php/jte/article/view/2088. Acesso em: 23 aug. 2026.