DIGITAL DOWNLOAD This great chart can help parents, teachers, SLPs, and other professionals with speech development norms. The speech sounds are presented in bright colored hexagons, organized by age, giving your office, classroom, or handout the perfect professional touch! Enhance your speech room with this valuable and visually stunning reference chart, adding functionality and charm to your space! Updated speech sound development norms for speech-language pathologists based on Crowe, K. & M