MANUEL, J. E. . Technology-Based Teacher Training and Enhancement of 21st-Century Competencies: A Systematic Review. International Education Trend Issues, [S. l.], v. 3, n. 2, p. 76 - 85, 2025. DOI: 10.56442/ieti.v3i2.1264. Disponível em: https://ijble.com/index.php/ieti/article/view/1264. Acesso em: 9 oct. 2025.