SINTA ULINA SITUMORANG. Model Pembelajaran Problem-Based Learning (PBL) di Masa Pandemi Covid-19 Berbantuan Powerpoint. LEARNTECH: Jurnal Teknologi Pendidikan, [S. l.], v. 1, n. 01, p. 23–28, 2025. Disponível em: http://jurnal.mifandimandiri.com/index.php/learntech/article/view/180. Acesso em: 18 apr. 2026.