Hi I have made a 'fun' activity for my GCSE Computing class for the image representation section. If anyone would like to use it you can download it here http://dl.dropbox.com/u/10388345/BitmapActivity.xlsx It is a spreadsheet with two tasks (see the separate tabs). The first task (tab) is to design a festive monochrome image by entering denary values. (Answers on a postcard for anyone who can figure out where my initial sample image came from!!!!) and the second (tab) is to construct a multi colour image from a series of given byte values. Hopefully it will work with the class and I hope it might be of use to others here.