Ari Susandi et al. 2021. The Effectiveness of Online Learning for Low Grades in Elementary Schools: Efektifitas Pembelajaran Daring Untuk Kelas Rendah di Sekolah Dasar. Pedagogia : Jurnal Pendidikan. 10, 2 (May 2021), 101–111. DOI:https://doi.org/10.21070/pedagogia.v10i2.975.