[PW] Re: Women's, Mother's and Traditional Arithmetic

[JT Thompson]

The book with the references to women's arithmetic is The Nothing 
That Is: A Natural History of Zero, by Robert and Ellen Kaplan.

Quote: "You will see women bending and braiding their fingers in the 
market, using what some of them call "women's arithmetic", others 
"the arithmetic of Marseilles".

The authors talk a bit more about the women's arithmetic, making it 
sound mouthwateringly easy (and a wonderful game to learn), but they 
don't make it clear how exactly it's done.