More than 300 Arlington Public Schools teachers have been trained to help students with dyslexia by using an approach that combines various senses and teaches sounds before making them into words. The Institute for Multi-Sensory Education’s Orton-Gillingham approach trains teachers to have students learn language by listening, speaking, reading and writing. So, for example, a dyslexic student is taught to see the letter A, say it and write it in the air at the same time. Students are also taught to read and write various sounds in isolation before making them into words, and learn the history of the English language to understand its rules and patterns. An APS spokesman said training is part of a concerted effort for teachers to support dyslexic students and help them get their reading and writing abilities up to a good standard.