The Language of Mathematics: Telling Mathematical Tales by Prof Bill Barton, University of Auckland, NZ Abstract: This seminar presents some of the ideas from my recent book "The Language of Mathematics: Telling Mathematical Tales". It begins by examining how different languages express mathematical ideas-it turns out that mathematics is expressed grammatically in very different ways. In flights of fancy, these grammatical differences are expanded into mathematical worlds that are different from mathematics as we know it. The picture of mathematics that emerges is of a subject that is much more contingent, relative, and subject to human experience than is usually accepted. I demonstrate the congruence between mathematics as we know it and the English language in comparison with other languages. The second part of the talk further illustrates the conjunction between mathematical and language development, building on Devlin's concept of the Mathematical Gene. I thereby present alternative answers to conventional questions about mathematics: where it comes from, how it develops, what it does and what it means. Finally, these playful ideas imply some serious reconsideration of mathematics education practices, in particular our use of minority languages and the role of abstraction in young children's education.