If you are going to the convention, here's what I'm presenting:
The Amazing Flexagon: Magic with Art and Math is a 2-hour ticketed hands-on workshop.
Sink Your Teeth into Toothpaste Batik! is a 30 minute workshop, which included a hands-on demonstration.
These are both topics I've written about repeatedly here on the blog.
I'd love to see you there in NYC this March!