This document discusses developmentally appropriate practice (DAP) in early childhood education. DAP focuses on teaching based on children's ages, experiences, capabilities, and interests. It considers individual human development and uses appropriate materials, learning experiences, and expectations for children. The NAEYC first published principles and guidelines for DAP in 1987 for children from birth to age 8. Revisions in 1997 and 2009 reflected ongoing concerns about learning expectations, curriculum, teaching practices, cultural and linguistic inclusion, and children with disabilities. Effective DAP requires understanding child development and learning styles, meeting children individually and as a group, and helping them achieve goals. Teachers should observe children, plan curriculum, assess knowledge and interests, and maintain learning goals while meeting children