NUGRAHA, A.; HAJI, S. PENERAPAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR MATEMATIKA PESERTA DIDIK. TRIADIK, [S. l.], v. 21, n. 2, p. 95–107, 2022. DOI: 10.33369/triadik.v21i2.30120. Disponível em: https://ejournal.unib.ac.id/triadik/article/view/30120. Acesso em: 8 may. 2024.