BELECINA, R. R. Portfolio as an Alternative Assessment: Effects on Problem-Solving Performance, Critical Thinking, and Attitude in Mathematics. The Normal Lights, [S. l.], v. 4, n. 1, 2008. DOI: 10.56278/tnl.v4i1.47. Disponível em: https://po.pnuresearchportal.org/ejournal/index.php/normallights/article/view/47. Acesso em: 16 may. 2024.