This document discusses building scientific inquiry skills from infancy through elementary school. It outlines how inquiry can look different at each developmental stage, from developing vocabulary and encouraging questioning in infants and toddlers, to more sophisticated investigations led by school-aged children with teacher scaffolding. The document provides examples of inquiry-based activities for different ages, and emphasizes creating an environment where children can explore, ask questions, and investigate concepts through hands-on experiences. National and state standards for scientific inquiry are also summarized.