PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA DAN BERFIKIR KRITIS SISWA KELAS 4 SD. EduMa: Mathematics education learning and teaching, [S. l.], v. 8, n. 1, p. 33–40, 2019. DOI: 10.24235/eduma.v8i1.4423. Disponível em: https://journal1.uinssc.ac.id/index.php/eduma/article/view/4423. Acesso em: 28 may. 2026.