C.J.
Hi, S.,
Scott & Lori have it right. Kids can teach other kids how to tie shoes quickly and no impatience or frustration. I don't know why it works like that, but it does. Even siblings who don't usually get along great, will be able to teach/learn shoe tying.
I have 9 adult children and 27 grandchildren and almost all of them learned to tie their shoes from siblings or cousins!
Good luck.
C.