Ulfa, Z., Robingatin, R. and Rahmawati, R. 2021. Kegiatan Pengenalan Konsep Bilangan Anak Kelompok A Pada Masa Pandemi Covid-19. Borneo Journal of Primary Education. 1, 3 (Oct. 2021), 157-167. DOI:https://doi.org/10.21093/bjpe.v1i3.4902.