Aulia, J., Roza , Y., & 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), 89–98. https://doi.org/10.29407/jmen.v7i2.15945