A Comparative Study of Middle School Mathematics Textbooks in China and Russia. iEducation, [S. l.], v. 1, n. 2, p. 49–60, 2025. DOI: 10.71204/twtqbt77. Disponível em: https://ie.cscholar.com/article/view/1000188. Acesso em: 16 sep. 2025.