PHAM, H. .-. T. .; NGUYEN, N.-G. . Competency-Oriented Teaching of Primary School Math Problems in Vietnam. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 17, n. 11, p. 32–47, 2018. Disponível em: https://ijlter.net/index.php/ijlter/article/view/619. Acesso em: 28 jul. 2026.