There’s some absolutely fantastic stuff being done with Popplet right now, and accounts are free.
Popplet is a web-based collaborative mind-mapping software capable of creating flow charts, graphic organizers, and other visual aids. It incorporates the best of the Web 2.0 world – it allows for collaborative editing, can be shared easily, and pulls in rich content from Youtube and other websites.
It is to softwares like Inspiration and Smart Ideas, what Prezi is to Powerpoint.
I have some examples here. I’ll post a warning to other wordpress users trying to do the same thing: you need to use gigya code to embed them, the embed code that popplet uses won’t work in wordpress.
At any rate, some work my ICT students did in 20 minutes today: