What Is Orton-Gillingham? Orton-Gillingham is a powerful approach to teaching reading and spelling that uses instruction that is multisensory, sequential, incremental, cumulative, individualized, explicit, and phonogram-based. Though often touted primarily as an instructional method for children with dyslexia and other...The post Is <span class="italic">All About Math</span> Based on the Orton-Gillingham Approach? appeared first on All About Learning Press.