HASIBUAN, A. M.; SURYA, E. The Effect of an Open-Ended Approach on Students. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 34, n. 1, p. 54–63, 2017. Disponível em: https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/7484. Acesso em: 2 may. 2024.