A pediatric PT’s complete guide to infant development from birth through 12 months. Rolling, sitting, crawling, transitions, standing — every stage with resources to go deeper.

Between ages 1–5, children experience huge leaps in coordination, balance, and confidence. From standing on one foot and climbing playground structures to hopping, galloping, and skipping, these early motor skills form the foundation for school readiness and lifelong movement. This guide breaks down each year’s milestones with simple, expert-backed Q&A to help parents support growing bodies through playful, developmentally aligned activities.