David Crystal's definition of dyslexia is, "a language disturbance that affects the ability to read"(451).  Dyslexia is the most common learning disability in children. Dyslexia occurs when there is a problem in your brain's ability to translate written words that your eyes see into meaningful language. Dyslexia is seen in children with normal intelligence and normal vision.  Some signs that a child might have dyslexia are seen when children have problems processing what they hear or when they cannot understand rapid instructions. Other signs include children reversing letters and forgetting the sequence of things that they read or hear.  Children with dyslexia usually have normal speech but they have difficulty understanding spoken language and have problems writing.  Teachers can use techniques in the classroom to help dyslexic readers such as involving hearing, vision and touch to improve reading skills.  Another technique that teachers can use is to have repeated instruction by a specialist for a dyslexic child. There is not a cure for dyslexia but with help children with a slight case of dyslexia can graduate from high school with the ability to read but just at a slower pace then a child without dyslexia.