WANG, Huaiyang; CHEN, Tingting; WEI, Shuangai; LIAO , Yueping; OU, Xiaojuan. Research on Strategies for Improving Teaching Efficiency of Middle School Mathematics Classrooms under the Background of Key Competencies. Journal of Education and Educational Research, [S. l.], v. 7, n. 3, p. 113–116, 2024. DOI: 10.54097/tk9h5p08. Disponível em: https://drpress.org/ojs/index.php/jeer/article/view/18662. Acesso em: 12 aug. 2026.