Efforts to Increase Activities and Learning Outcomes During the Covid-19 Pandemic at SD Muhamadiyah 1 Waru: Upaya Meningkatkan Aktivitas Dan Hasil Belajar Di Saat Pandemi Covid-19 Di SD Muhamadiyah 1 Waru. icecrs 2021, 10. https://doi.org/10.21070/icecrs20211132.