Childhood education during the period from infancy to age five or six.
Institutions for preschool education vary widely around the world, as do their names (e.g., infant school, day care, maternal school, nursery school, crèche, kindergarten). The first systematic theory of early childhood pedagogy was propounded by kindergarten . Other influential theorists include Maria Montessori and Jean Piaget . Of major concern in preschool education is language development; teachers often conduct listening and language games. See also {{link=elementary education">elementary education .