Performance of first-year undergraduate students attending exact sciences courses in problems of the additive conceptual field. Acta Scientiarum. Education, [S. l.], v. 37, n. 4, p. 383–390, 2015. DOI: 10.4025/actascieduc.v37i4.19955. Disponível em: https://periodicos.uem.br/ojs/index.php/ActaSciEduc/article/view/19955. Acesso em: 31 maio. 2026.