MULYANTO, H.; GUNARHADI, G.; INDRIAYU, M. THE EFFECT OF PROBLEM BASED LEARNING MODEL ON STUDENT MATHEMATICS LEARNING OUTCOMES VIEWED FROM CRITICAL THINKING SKILLS. International Online Journal of Education and Teaching, [S. l.], v. 5, n. 3, p. 553–563, 2018. Disponível em: https://www.iojet.org/index.php/IOJET/article/view/392. Acesso em: 10 jan. 2026.