'Wall Display' is a brand new learning tool for teachers and students in the form of a free blog. The project was set up in 2010 by a Teach First participant and his friend a graphic designer.
Free online or off-line
The Rasterbator creates huge, rasterized images from any picture. Upload an image, print the resulting multi-page pdf file and assemble the pages into extremely cool looking poster up to 20 meters in size.