Exploratree is a great site for educators to use for creating mind maps or brainstorming. This is an easy site to use that allows for group collaboration and comments as well. Best of all, Exploratree has a number of different templates to choose from to find the right "mind map" for you.
I highly recommend checking out Exploratree by clicking here!!
Click here to see my top 10 sites for creating outlines.
Thanks to Richard Byrne's blog for the tip!!