Nurhayati, Firastika Eka, and Sigid Edy Purwanto. “Analysis of the Mathematics Learning Motivation of Class XI IPA Students During the Covid-19 Pandemic”. Edumatica : Jurnal Pendidikan Matematika 11, no. 01 (April 29, 2021): 93-98. Accessed September 20, 2021. https://online-journal.unja.ac.id/edumatica/article/view/12440.