HASIBUAN, Ainul Marhamah; SURYA, Edy. The Effect of an Open-Ended Approach on Students. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 34, n. 1, p. 54–63, 2017. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/7484. Acesso em: 18 sep. 2025.