An Engaging- Interactive- Successful - Math Guide for Teachers, Parents and Literacy Practitioners Based on the Orton-Gillingham Approach to Literacy Instruction For some students, mathematics is a road travelled in small steps. A successful multisensory approach leads the student through small increments of understanding toward unifying themes in mathematics. Student’s strengths and needs must be recognized and addressed with built-in “checks for error,” as well as a built-in system for building confidence and competence. The OG interactive, cognitive approach for learning math enables students to develop more effective ways of thinking about math and applying new skills.