Fajri, Annisa, and Despryhati Ningsih. 2022. “The Effect of Using Google Classroom Applications on Online Learning During the Covid-19 Pandemic on Cognitive Achievement in Class X Biology Learning at SMAN 2 Gunung Talang”. PAKAR Pendidikan 20 (1), 89-98. https://doi.org/10.24036/pakar.v20i1.256.