Child Development By lizhandy Sep 15, 1999 Conception Mar 20, 2000 28 weeks - Brain begins to mature; fetus resembles a sleeping newborn Jun 16, 2000 Birth Dec 16, 2000 6 months - begins babbling; can support weight on legs and bounces Jun 16, 2001 1 Year - begins to walk and tries to imitate language Dec 16, 2001 18 Months - Can follow one step commands and may become clingy Jun 16, 2002 2 Years - starts to show defiant behavior and begins to say sentences Jun 16, 2003 3 Years - can dress and undress themselves and can carry on a conversation Jun 16, 2005 5 Years - Knows about everyday things like money and food, and can draw a person with 6 or more body parts Jun 16, 2008 8 Years - Begin to lose baby teeth and enjoy being around their friends Jun 16, 2012 12 Years - Puberty begins for boys and girls and they enjoy making decisions for themselves Jun 16, 2014 14 Years - Show more concern about what other people think, moodiness Jun 16, 2016 16 Years Show more independence, and show interest to develop more intimate relationships