The document outlines the healthy development of a child from birth to age 14 across physical, cognitive, and social/emotional dimensions. Key milestones include: gaining weight from 0-3 months; saying first words at 12 months; stacking objects and riding a tricycle by age 2; knowing their gender identity at age 3; having long attention spans and completing activities from ages 4-5; cooperating well with teachers and having friends by ages 6-8; displaying a tomboy interest in sports from ages 8-10; and showing romantic interests and spending time with friends from ages 12-14.