NUGRAHA, Adam Arya; PURWATI, Heni; ARIYANTO, Lilik; SUMARTI. Problem-based learning integrated with flipped classrooms assisted by google sites to improve student mathematics learning achievement. Jurnal Pijar Mipa, [S. l.], v. 18, n. 5, p. 670–675, 2023. DOI: 10.29303/jpm.v18i5.5428. Disponível em: https://jurnalfkip.unram.ac.id/index.php/JPM/article/view/5428. Acesso em: 20 may. 2024.