NGUYEN, N.-G.; PHAM, H. .-. T. Constructivist Learning and the Law of Sines in Advanced 10th Grade Geometry Textbooks in Vietnam. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 19, n. 1, p. 38–59, 2020. Disponível em: http://www.ijlter.myres.net/index.php/ijlter/article/view/490. Acesso em: 17 apr. 2026.