This document discusses the developmental milestones that toddlers reach between the ages of 1 to 3. It outlines the key physical, cognitive, linguistic, social, and emotional skills achieved at each year. At age 1, toddlers learn to crawl, walk, pick up objects, say their first words, and understand language. Between ages 1 to 3, they start running, drawing, problem solving, following instructions, and developing self-awareness and social skills. By age 3, their motor skills, language, thinking abilities, and social interactions continue to advance. The document emphasizes the importance of parents being aware of developmental milestones to identify any delays and support their child's healthy growth.