GINTING, Heryansyah; SURYA, Edy. Development Learning Device Based for Measuring Contextual Critical Thinking Skills Students SD Class VI Mathematical. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 33, n. 3, p. 301–310, 2017. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/7544. Acesso em: 27 oct. 2025.