One of the most interesting and powerful features in the Google Apps tool set is the Drawing module.
The module allows students to create concept maps, process flows, story lines and other relevant content diagrams either individually or using the power of live cooperative work... We attempted this two years ago at CSUSM with Middle School students in creating one common drawing. Wow!
Check it out at:
iQuest Brarinstorming using Google Apps
Since that time, the tool has become even more robust. You can save the images in a variety of formats so you can use them on presentations, word processing etc. Highly recommended.
Chrome is the suggested browser.