Problem solving in the teaching of single variable differential and integral calculus: Perspective of mathematics teachers. Uniciencia, [S. l.], v. 32, n. 2, p. 42–56, 2018. DOI: 10.15359/ru.32-2.3. Disponível em: https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/10658.. Acesso em: 30 apr. 2024.