From the Open University's Open Learn site. Identify rotation and translation symmetries in wallpaper patterns. Think this will work well in class, but uses click & drag, so will probably use a wireless mouse rather than the IWB.

An interactive maze designer - I think that this would be great for an interactive whiteboard. It's part of a site full of interesting pictures, photos and information about mazes. I approached the author, Jo Edkins, about using some of the materials and got a really nice reply. More info about permission for use in schools is here: http://gwydir.demon.co.uk/jo/about.htm Jo Edkins has also created lots of other webpages - http://gwydir.demon.co.uk/jo/index.htm - I need to start exploring!

"Use the display and the slider to see how shapes up made up from their nets." Nice visual showing one net for each solid 'fold' up to make it.