1, American Association for Early Childhood Education (NAEYC) is the authoritative organization of early childhood education in the United States.

2. The American Association for Early Childhood Education (NAEYC) has formulated some guiding principles for early childhood education to guide educators to implement correct early childhood education for infants.

3. Developing appropriate educational practice is the idea and action guide of early childhood education strongly advocated by American Early Childhood Education Association.

4. The concept of early childhood education highlights the core ideas of integration theory, multiple intelligences theory and inclusive education theory.

5. By putting forward "appropriate" requirements for teachers, we can interpret "National Association for Early Childhood Education's standards and certification indicators" and lead the practice of early childhood education in the United States.