We have many decades of theory and research in child development that tell us so much about how young children learn. We know that, like children all over the world and throughout time, children need to play. We know that learning in the early years is active — that kids learn through direct play and hands-on experiences with people, with materials, and in nature.
Kids need first-hand engagement — they need to manipulate objects physically, engage all their senses, and move and interact with the 3-dimensional world. This is what maximizes their learning and brain development. A lot of the time children spend with screens takes time away from the activities we know they need for optimal growth. We know that children today are playing less than kids played in the past.