Mathematical connection skills and their relationship with productive thinking among secondary school students. Periodicals of Engineering and Natural Sciences, [S. l.], v. 10, n. 1, p. 421–430, 2022. DOI: 10.21533/pen.v10.i1.548. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/548. Acesso em: 8 jun. 2026.