DAI, Jiamei. Feasibility, Difficulties and Countermeasures of Mixed-age Education in Coastal Cities. Journal of Theory and Practice in Education and Innovation, [S. l.], v. 2, n. 1, p. 9–14, 2025. Disponível em: https://woodyinternational.com/index.php/jtpei/article/view/140. Acesso em: 26 apr. 2025.