“Peter, can you explain briefly what you understand by 'ethnomathematical education'?”
With pleasure, Mary. Ethnomathematics is the study of the relationship between discrete cultures and the mathematics that happens within them. Ethnomathematical education, which I believe is to what Rebecca was referring in her unwarranted broadside at Tim:
“The truth in mathematics education is ethnographic Tim.”
Then relates to the influence of ethnomathematics upon the content and process of mathematical education within discrete cultures of identity or not.
Whether we can or should attempt to derive an ought from an is where ethnomathematics is concerned is another matter entirely. I recognise that different societies use postage stamps which differ from those we use in the United Kingdom but I don’t infer from this a moral or educational obligation to attempt to teach English Language classes in a manner which fervidly references the character of a pupil’s ancestry which itself is likely quite alien to the pupil.
It all seems a bit "Clare in the Community" to me.