Found another great site! Twiddla at http://www.twiddla.com, states it is a "no set-up, web-based meeting playground" and they provide a free educator account. The Twiddla shares that an educator can "Mark up websites, graphics, and photos, or start on a blank canvas. Browse the web with your friends or make that more productive than ever. No plug-ins, downloads, or firewall voodoo - it's all here, ready to go when you are. Browser-agnostic, user-friendly." I was impressed with the idea that there is no for people you invite to a meeting on Twiddla. I signed up for a free educator account and had it confirmed in minutes. If you join, please let me know as I'd love to practice and share on the account!