I have been speaking with Tim Heckel over at slatebox.com about his open source mapping tool an the next interation that is about to come out. Very cool application - but even cooler to see a teacher using it with students and appreciating the fact that the technology is very easy to understand and use.
And of coures the students just dive right in! http://hollymueller.blogspot.com/2014/05/digilit-sunday.html
Take a look and let Tim know your thoughts - very cool stuff.