Tampubolon, T. et al. 2022. The Evaluation of Mathematics Online Learning in Eight Grade Students of SMP Negeri 1 Sipahutar in Academic Year 2021/2022. International Journal of Humanities and Education Development (IJHED). 4, 4 (Aug. 2022), 52–56. DOI:https://doi.org/10.22161/jhed.4.4.8.