Centers for Disease Control and Prevention
http://www.cdc.gov/ncbddd/dd/ddmr.htm
This website gives information about causes of mental retardation, and resources for families and people who have MR.
Down Syndrome on the Internet
http://www.downsyndrome.com
Information about Down Syndrome.
National Dissemination Center for Children With Disabilities
http://www.nichcy.org/pubs/factshe/fs8txt.htm#top
This website gives IDEA’S definition of mental retardation, signs of mental retardation and also tips for teachers.
National Down Syndrome Society
http://www.ndss.org/content.cfm?fuseaction=InfoRes.Main
This website has information about its cause, diagnosis, and information about the education of children who have Down Syndrome.
PSweb Mental Health Site
http://www.psyweb.com/Mdisord/jsp/menret.jsp
This website explains the definition and levels of Mental Retardation.
