Marcelle Van den Heuval Wright, 72, a special education consultant and a retired reading specialist with the Montgomery County Public School system, died of cancer Sunday at her home in Chevy Chase. She had been ill for several months.

Mrs Wright had been a nurse and teacher in New York City before moving to the Washington area in 1948 with her first husband, Fred Charters Kelly, a writer and the official biographer of the Wright Brothers. After his death in 1959 she picked up teaching career and , until her retirement in 1971, taught children afflicted with dyslexia and other reading disabilities in Montgomery County's schools.

In 1971, she married William K. Wright of Toledo, Ohio, who died later that year. Mrs. Wright then began working as a special education consultant.

She was born in New Brunswick, N.J., and graduated from the Flower-Fifth Avenue Hospital nursing school. She later earned a bachelor's and a master's degree from the Teachers College at Columbia University. She also was a graduate of the Neurological Institute of New York.

Survivors include a daughter, Jeanne Alice, of home in Chevy Chase; a son, Brain Booth Kelly, of New York City and a sister, Helene Bowen, of Ridgewood, N. J.