
The capacity to use expressive and/or receptive language is significantly limited, impaired, or delayed and is exhibited by difficulties in one or more of the following areas: speech, such as articulation and/or voice; conveying, understanding, or using spoken, written, or symbolic language. The term may include a student with impaired articulation, stuttering, language impairment, or voice impairment if such impairment adversely affects the student's educational performance.
http://www.apraxia-kids.org/
The Childhood Apraxia of Speech Association is a non-profit publicly funded organization whose mission is to strengthen the support systems in the lives of children with apraxia so that each child is afforded their best opportunity to develop speech. The website provides electronic and print information to families, professionals, policy-makers and other members of the public.
http://www.ldonline.org/ldbasics/ld_types.html
LD OnLine is a national educational service of public television station WETA in Washington, D.C. LD OnLine offers online services and produces video programs dedicated to improving the lives of children and adults with speech and language disorders. This is an interactive guide to learning disabilities for parents, teachers, and children.
http://www.aphasia.org/
The National Aphasia Association, NAA, is a nonprofit organization that promotes public education, research, rehabilitation and support services to assist people with aphasia and their families.
http://www.nidcd.nih.gov/health/voice/
NIDCD is one of the Institutes that comprise the National Institutes of Health (NIH). NIDCD is mandated to conduct and support biomedical and behavioral research and research training in the normal and disordered processes of hearing, balance, smell, taste, voice, speech, and language.
http://www.nichcy.org/pubs/factshe/fs11txt.htm
The National Dissemination Center for Children with Disabilities (NICHCY) provides information and resources about speech and language impairments.