“Efforts of SMP Muhammadiyah 5 Reinforcement in Improving Learning Activities During the Covid-19 Pandemic: Upaya SMP Muhammadiyah 5 Tulangan dalam Meningkatkan Aktivitas Pembelajaran Selama Pandemi Covid-19” (2021) Proceedings of The ICECRS, 10. doi:10.21070/icecrs20211168.