GHOFUR, A.; ANDAWIYAH, R.; MATTARI , A. S. A. . Empowering Learners on Mathematic Subject by Problem Based Learning and Metacognitive Strategy to Improve Reflective Thinking Competence. International Journal of Education Research and Development, [S. l.], v. 3, n. 2, p. 107–114, 2023. DOI: 10.52760/ijerd.v3i2.39. Disponível em: https://www.yayasancec.or.id/e-journal/index.php/corolla/article/view/39. Acesso em: 9 apr. 2026.