Aulia, J., Roza , Y. and Maimunah, M. 2021. Mathematics online learning during COVID-19 pandemic: The effectiveness of online learning at SMK Negeri 2 Tanah Putih. Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika. 7, 2 (Nov. 2021), 89-98. DOI:https://doi.org/10.29407/jmen.v7i2.15945.