If you're a visual learner, or you teach visual learners, and you haven't yet checked out Lucidchart, you should. It's a neat online diagramming tool that not only gives you lots of options for creating flow charts, org charts, story boards, room layouts, idea maps, presentations, and much more. It might remind you of Inspiration or OmniGraffle. It also supports collaboration like any Google doc would if you share it with collaborators. To create a Lucidchart, log into your Lab Google Drive account, click the Create button, and select Lucidchart (shown in the picture).
The interface looks a little imposing, but it's not that hard to figure out. Most of the resources there are drag and drop. There are also numerous helpful tutorials on their support site. Enjoy!