SIREGAR, N. C.; NALARSIH, R. T. PREFACE TO STEM METHODS FOR SCIENCE TEACHERS AT THE DARUL MURSYID ISLAMIC BOARDING SCHOOL: COMMUNITY SERVICE: PENGENALAN METODE STEM BAGI GURU SAINS DI PESANTREN DARUL MURSYID, MEDAN INDONESIA: PENGABDIAN MASYARAKAT. Khidmatuna: Jurnal Pengabdian Masyarakat, [S. l.], v. 3, n. 1, p. 44–53, 2024. DOI: 10.36781/khidmatuna.v3i01.641. Disponível em: https://jurnal.alfithrah.ac.id/index.php/khidmatuna/article/view/641. Acesso em: 27 apr. 2026.