Marilyn has been developing this multisensory approach to mathematics instruction for over 25 years. Her original training was traditional Orton Gillingham instruction for teaching students with language based disabilities. She later became certified as a CALT under an IMSLEC accredited institution. She is a former classroom and demonstration teacher, but she has also worked in private academic support.

Marilyn is a frequent presenter at national and regional conferences. She teaches two graduate level multisensory math courses through The Atlantic Seaboard Dyslexia Center in Rockville MD. Her distance courses are offered both nationally and internationally.