Ethnomathematics is the study of the relationship between mathematics and culture. It refers to a broad cluster of ideas ranging from distinct numerical and mathematical systems to multicultural mathematics education.
I was introduced to this idea today and find it so curious. Math is a language in its own right so how can one learn from this as it relates to design? Sort of like a biomimicry meets language and culture? I dare you to try using it in a sentence: "Isn't that so enthomathematical?"