Respuesta :
Source: me as a ECE student, found this section in my college text book
under the "preventing injuries" section page 51 top left corner of the "Healthy Young Children: a manual for programs"
"To be sure of the whereabouts and activity of each cild; asign a specific teacher to supervise certain children, and have that teacher routinely conduct name-to-face checks of each child at preset intervels and before and after each transition( eg. from the classroom to the playground or from restoom to the classroom)