The Effect of Applying PQ4R Strategy with a Scientific Approach on Mathematical Problem Solving Ability. Indonesian Journal of Education Research (IJoER), [S. l.], v. 4, n. 1, p. 13–17, 2023. DOI: 10.37251/ijoer.v4i1.570. Disponível em: https://cahaya-ic.com/index.php/IJoER/article/view/570. Acesso em: 25 may. 2026.