I am also a helper in a 6th-7th grade literature class that is reading "The Master Puppeteer" - a story set in Japan, and we are going to "make sushi" for an activity. Woo hoo! I can't wait. I hope I am able to control myself and let the kids have some.
And I found this terrific video at videojug (the UKs version of YouTube) about how to eat sushi!
Check it out:
VideoJug: How To Eat Sushi