Hi, I noticed that
you posted earlier in the month regarding your daughter's project.
I'm sure you'll do whatever is possible to help her, but why are you doing your daughter's research for her?
Don't know if you'll get much help in this forum because many of us have never even been to a step show, and I know that many members have never even heard of the term until GC.
I think it's going to be tough for you to actually find the exact origin of stepping, but like my friend Senusret I said, GOOD LUCK.