Teacher Gail Grossman leads a small group of students, matching three sounds to three different colored tiles: n-i-sh. The exercises help students learn to break words down into sounds, something that’s easier for some kids than others. The tiles and planned exercises are part of the Barton System, a program that helps students with dyslexia, a learning disability that causes students to struggle reading and writing. The method is based on Orton-Gillingham but non professionals can easily use it.