Ages and Stages of Child Development

During the infant, toddler, and preschool years, children experience tremendous growth and change as they progress through the various stages of development. It is important to realize that children do not all reach milestones of development at the same time—children grow and learn on their own timetables, based on their unique differences.

As parents, caregivers, and professionals work with young children, it is critical that they understand the typical stages of development for children ages birth to five so that they can make good decisions about their day-to-day interactions and work with them. Anyone living or working with young children should know the average age at which most children will be able to carry out all of the skills involved in growing up--everything from rolling, crawling, and sitting to smiling, talking, and toilet training.

In 2005, early learning leaders in Washington unveiled the Washington State Early Learning and Development Benchmarks in an effort to provide those who live and work with young children a resource to understanding typical stages of development for infants, toddlers, and preschoolers.

Learn more about the Washington State Early Learning and Development Benchmarks [60.6MB].

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