Norma Presmeg

Presmeg is originally from South Africa, was educated in South Africa and England, and worked in the US, where she is professor emeritus of mathematics at Illinois State University.

[2] She taught high school mathematics in South Africa from the mid-1960s to the late 1970s, and earned a master's degree in education in 1980 at the University of Natal.

Her dissertation, The Role of Visually Mediated Processes in High School Mathematics: A Classroom Investigation, was supervised by Alan J. Bishop [de].

[4] After returning to South Africa for a five-year stint at the University of Durban-Westville, she moved to the US in 1990, as a faculty member in Curriculum and Instruction at Florida State University.

Ten years later, she moved to Illinois State University,[2] where she is retired as a professor emeritus.