Sudirman, A. A.; Modjo, D. .; Ahmad, A. .; Suryani, A. C. .; Allade, A. N. .; Ismail, N. . Education on the Use of Masks and Hand Hygiene in Preschool Age Children During the Covid-19 Pandemic At Mentari Kindergarten, West Pilohayanga Village, Telaga District, Gorotalo Regency. JUCEP 2021, 1, 11-15.