I still do not see how much more convenient Tau is. As several people have stated, 2pi = Tau is a quite simple equation and at some point kids will have to learn about pi in math when they're calculating the volume of some structures. Besides if pi isn't taught and we move to Tau, how will teachers then tell kids if they're not given new books?

"Hey children, do you see that Pi sign in the book? Yea, cross that over and put in Tau instead"

I won't mind using Tau along with pi and as a person who just started on engineering this summer it won't affect me at all. I'll just define tau as 2pi in the beginning of my MathCad document and forget all about it.

I'm sorry but I still can't see how tau makes it easier to teach math to children.

Edit: is it really a problem for children today to understand the fundamentals of pi? Seems like an odd solution to a problem that doesn't even exist