MAIMUFI, R.; HAVIZ, M.; DELFITA, R.; FAJAR, N. Validitas Lembar Kerja Peserta Didik (LKPD) Berbasis Model Problem Based Learning (PBL) Pada Materi Sistem Peredaran Darah Kelas XI SMA. Edusainstika: Jurnal Pembelajaran MIPA, [S. l.], v. 1, n. 1, p. 49–55, 2021. DOI: 10.31958/je.v1i1.3144. Disponível em: https://ejournal.uinmybatusangkar.ac.id/ojs/index.php/Edusainstika/article/view/3144. Acesso em: 20 jan. 2026.