Through my college Liam Colgan I found this excellent video explaining the way that glaciologists model the future of glaciers.
I hope you find that fun and useful for sharing and educating.
I also recommend taking a shifty around the website that hosted this project: http://imaginary.org, which is a platform for open and interactive mathematics. It features a variety of content that can be used in schools, at home, in museums, at exhibitions or for events and media activities.