Emma Castelnuovo (12 December 1913 – 13 April 2014) was an Italian mathematician and teacher[1] of Jewish descent.

[5] In 1943 the German occupation of Italy forced the entire Castelnuovo family to go underground, seeking shelter under a false name.

They sought refuge with friends and then at hospitals, religious institutions, and small pensions, and continued all the time to travel frequently for their own safety.

Even as she worked as a teacher, she conducted continuous research on the subject of mathematics education and published many papers.

[4] In 1948 she published the first of many editions of the book Intuitive geometry, which demonstrated her personal approach to teaching mathematics.