Child development stages - Wikipedia, the free encyclopedia Child development stages describe theoretical milestones of child ... It is important to keep in mind that even a tiny baby is a person. ... months); 3.5 Two-year-old; 3.6 Three-year-old; 3.7 Four-year-old; 3.8 Five-year-old ... ISBN 1-55704-337-X. Dohert
