http://www.cdc.gov/ncbddd/actearly/milestones/milestones-1yr.html
Centers for Disease Control and Prevention, U.S. Department of Health and Human Services
How your child plays, learns, speaks, and acts offers important clues about your child’s development. Check the milestones your child has reached by his or her 1st birthday. Take this with you and talk with your child’s doctor at every visit about the milestones your child has reached and what to expect next.