Most of you may already be familiar with many of the tools such as PowerPoint, Photoshop, etc. described in this reading as they have been around for well over a decade. These software programmes still have a value to them and in fact they may be the most commonly used products in most schools and universities in our country.  Have you used any such software in your teaching or in other contexts? As new technologies emerge, the number of software programmes for visualisation increase both in numbers and sophistication. In addition many of them are available as web tools and often at no cost. These have become more elaborate and powerful, permitting creators to embed sound, videos and animation.