Model Pembelajaran Problem Based Learning Untuk Peningkatan Motivasi Belajar dan Kemampuan Berfikir Kritis . Jurnal Pendidikan Dasar, [S. l.], v. 2, n. 2, p. 93–105, 2021. Disponível em: https://jurnal.umpwr.ac.id/index.php/jpd/article/view/1651. Acesso em: 8 sep. 2026.