This document outlines the typical physical, motor, cognitive, language, social, and emotional development stages from birth to 5 years of age. It describes the developmental milestones and abilities that emerge each year such as improved motor skills like rolling over, crawling, walking and improved language skills from babbling to first words to short sentences. It also notes changes in sleep patterns, social behaviors and emotions at each stage such as stranger anxiety, separation anxiety, and temper tantrums. The document explains how understanding these development stages will help the reader in their career as an early childhood educator to plan appropriate activities and environments for young children.