The document discusses the history and key aspects of learning disabilities. It notes that in the 1960s Samuel Kirk proposed the term "learning disabilities" to describe children with normal intelligence who had learning problems. The Achievement-Ability Discrepancy model required students to show a severe discrepancy between achievement and intellectual ability to be identified as learning disabled. Response to Intervention evaluates students' response to increasingly intensive instruction. The document also discusses genetic, medical, and environmental factors; common challenges students with learning disabilities face; and educational approaches used to help these students.