Mellysa, Viona, Ardi Ardi, and Yosi Rahmi. 2021. “Implementation of Online Learning During Pandemic in Science Subjects at SMPN 6 Padang Panjang”. Ruang-Ruang Kelas : Jurnal Pendidikan Biologi 1 (1), 24-31. http://rrkjurnal.ppj.unp.ac.id/index.php/RRKJURNAL/article/view/6.