PURBA, S. T.; RAJAGUKGUK, S.; YANA, M. D. ANALISIS KESULITAN BELAJAR SISWA DALAM MEMAHAMI MATERI SISTEM REGULASI MANUSIA DI KELAS XI SMA SWASTA KARTIKA 1-4 PEMATANGSIANTAR TAHUN AJARAN 2020/2021: ANALYSIS OF STUDENTS’ LEARNING DIFFICULTIES IN UNDERSTANDING THE MATERIALS HUMAN REGULATION SYSTEM IN CLASS XI SMA PRIVATE KARTIKA 1-4 ADMINISTRATION FOR THE 2020/2021 ACADEMIC YEAR. MetaBio : Jurnal Pendidikan (Edisi Elektronik), [S. l.], v. 3, n. 2, p. 24–33, 2021. Disponível em: https://jurnal.usi.ac.id/index.php/metabio/article/view/40. Acesso em: 21 may. 2024.