PRATAMA, R. Development of Mathematics Learning Devices Through Problem Based Learning Models to Improve Problem Solving Mathematics Ability Students SMP Swasta Salsa. Advances in Social Sciences Research Journal, [S. l.], v. 5, n. 10, 2018. DOI: 10.14738/assrj.510.5392. Disponível em: http://116.203.177.230/index.php/ASSRJ/article/view/5392. Acesso em: 23 nov. 2024.