A Comprehensive Review of Modern Teaching Strategies in Mathematics Education: Theoretical Foundations, Digital Transformations, and the Post-AI Implementation Gap (2020–2026). Naveen International Journal of Research in Education (NIJRE), "Prayagraj, India", v. 2, n. 2, p. 21–26, 2026. DOI: 10.71126/nijre.v2i2.24. Disponível em: https://nijre.com/index.php/nijre/article/view/24. Acesso em: 25 may. 2026.