PURNOMO, Andri Widi; SUMARNO; PRASASTI, Diwyacitta. 157. Penerapan Problem Based Learning untuk Meningkatkan Aktivitas dan Hasil Belajar Biologi Kelas X SMA Materi Perubahan Lingkungan . Prosiding Seminar Nasional Pendidikan Profesi Guru, [S. l.], v. 1, n. 1, p. 1436–1443, 2023. Disponível em: https://conference.upgris.ac.id/index.php/psnppg/article/view/4102. Acesso em: 5 dec. 2025.