Research on the Penetration of Mathematical Ideas and Methods in the Teaching of Primary School Mathematics Wide-angle "Matching Problems": A Case Study of the First Volume of the Second Grade of the People’s Education Edition. Journal of educational development exploration, [S. l.], v. 1, n. 2, p. 31 –40, 2025. DOI: 10.65196/797xp239. Disponível em: https://ojs.gfpress.org/jede/article/view/51. Acesso em: 6 nov. 2025.