As a visual learner, I see the great importance in using mind mapping tools with my students when planning a project, when doing revision for a test and even when they need to write everything down that is in their head.
Before using mind maps with my students, I noticed that many times their ideas in their writing were disconnected, they would often go off topic or they would get stuck because they didn't know what to write about next.
With mind maps, students can link their ideas, insert images and even insert videos (depending on the tool they use). They can use colors and they can make their plan come alive. Students also tend to spend a lot more time on their "plan" when using mind mapping tool. Then, when it comes to writing, they are very prepared and feel more confident throughout the writing process.
http://www.mindmapinspiration.com/100-reasons-to-mind-map-paul-foreman/
Another great thing about mind maps, is it good for all ages!
Here is a list of 5 FREE Mind Mapping tools available online:
https://bubbl.us/ - Brainstorming made simple
http://mind42.com/ - Collaborative mind mapping in your browser
http://www.mindmeister.com/ - The leading online mind mapping tool (MindMeister goes mobile: iPhone. iPad. Android.)
http://www.mindomo.com/ - Mind mapping made easy
http://www.wisemapping.com/c/home.htm - Visual thinking evolution
Here is a great tutorial on how to use these 5 mind mapping tools:
http://h30411.www3.hp.com/posts/1018306?mcid=Twitter
Happy mapping!