SIREGAR, M. B.; NARPILA, S. D. Influence of Problem-Based Learning Model on Students’ Critical Thinking Ability and Learning Motivation in Mathematics Learning. Numerical: Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 7, n. 2, p. 263–274, 2023. DOI: 10.25217/numerical.v7i2.3884. Disponível em: https://www.journal.iaimnumetrolampung.ac.id/index.php/numerical/article/view/3884. Acesso em: 14 jul. 2025.