PERVEEN, K. Effect Of The Problem-Solving Approach On Academic Achievement Of Students In Mathematics At The Secondary Level. Contemporary Issues in Education Research (CIER), [S. l.], v. 3, n. 3, p. 9–14, 2010. DOI: 10.19030/cier.v3i3.181. Disponível em: https://clutejournals.com/index.php/CIER/article/view/181. Acesso em: 18 jul. 2024.