From a pediatric occupational therapist, an outline of developmental skills by age categories (0-3 months, 6 months, 9 months, 12 months, 18 months, 24 months, 30 months, 3 years, 4 years, 5 years, 6 years, elementary age, and teenagers). Focuses on functional skills related to self-calming, daily living skills, play and social skills, & attention and cognitive skills.Key concepts are outlined for each developmental stage, as well as specific skill development to guide assessment and treatm