Details Piaget's four stages in the cognitive development of children--the sensorimotor period, pre-operational stage, concrete operational stage, and formal operational stage--and discusses their implications for the planning and design of programs for instructional television, and possible effects on mental development and the cognitive…

This monograph presents information to help educators consider how to determine the best age for each child to begin his or her formal schooling. Trends in state requirements for school entrance age are described, and research in areas such as mental age, reading readiness, child development, screening instruments, and experimental preschool…