1. M. R. Maulani, S. Supriady., and N. Riza, “E-Learning implementation to increase student participation in learning to make it more interactive and fun”, Scientific Journal of Applied Information Technology, vol. 7, no. 1, pp. 27–35, 2020. https://doi.org/10.33197/jitter.vol7.iss1.2020.489
2. B. Sitepu, “Application of 2013 curriculum-based elementary school christian religious education materials and their influence on student achievement”, Tabernacle Theological Journal of David, vol. 6, no. 1, pp. 71–78, 2020.
3. N. Tambunan, “Obstacles to implementing islamic religious education at lobugoti state elementary school, pangaribuan district, north tapanuli regency”, Scientific Journal of Al-Hadi, vol. 2, no. 2, pp. 477–484, 2017.
4. K. Kamid., J. Marzal., N. N. Simamora., A. Ramadhanti., and M. Iqbal, “Study of ethno-mathematics and vygotsky's constructivism on jambi traditional marriages”, Educational Sciences: Theory & Practice, vol. 21, no. 4, pp. 123-137, 2021.
5. R. Reski., N. Hutapea., and S. Saragih, “The role of problem based learning (PBL) models on the ability of mathematical problem solving and student learning independence”, JURING (Journal for Research in Mathematics Learning), vol. 2, no. 1, pp. 049-057, 2019.