Embed a MindMeister Mind Map
Few tools offer as much promise as a digital mind map, that students can work on over the course of several weeks to record and share their learning in a way that is much more organic that a paper based mind map. For more on the the potential use of mind maps see this post.
To make it easier to monitor a class of mind maps, it's a good idea to ask students to embed them online, so it's easy for you to flick through them, to do this they will need to use an embed code:
Go to MindMeister (via the Google Grid)
Create/Open a Mind Map
Click Share at the bottom of the screen
Make the map Public
Choose Embed map...
Tweak the settings, and copy the embed code