This document discusses speech and language disabilities, including definitions, types, prevalence, causes, assessment tools, instructional practices, and current issues. It defines speech and language impairments and notes that 1 in 5 children identified for special education have primary needs in these areas. Common types are discussed such as expressive versus receptive language disorders, speech impairments, language disorders including aphasia and dysphasia. Assessment tools and a variety of instructional models are outlined. Current issues highlighted include the importance of early language development and incorporating technology such as augmentative communication devices to enhance participation and learning.