IRAWAN, Andi; SURYA, Edy. Application of the Open Ended Approach to Mathematics Learning in the Sub-subject of Rectangular. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 33, n. 3, p. 270–279, 2017. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/7539. Acesso em: 1 oct. 2025.