Donna specializes in developing high-interest, age-appropriate pre-K–5 mathematics content for print, hands-on, and electronic instruction and practice. Also she has experience developing K–8 reading and language arts materials, math products for grades 6–8, ESL math and reading activities, and critical math skills for adult and career education. She taught grades K, 2, and 4, summer school general math, and music prior to a long career in educational publishing. Before joining Six Red Marbles, Donna worked for over 30 years in the roles of consultant, sales rep, and editor. In her last three roles, she was a Math Supervising Editor for Steck-Vaughn/Harcourt, a Math Executive Editor for Holt, and a writer of math curriculum for current basal and supplemental programs. Donna holds BS and MEd degrees from the University of North Texas, where she studied elementary education, math, music, and curriculum supervision.