"A picture paints a thousand words," as the saying goes, and visual aids can provide information, provoke discussion and discovery, and make difficult ideas easy to understand. They can also improve the accessibility of a book or a poster simply by making it look more interesting. The book contains more than 400 drawings relating to a wide range of educational and health issues, along with advice on copying, enlarging and otherwise changing the illustrations without using special equipment to make them
appropriate to a particular situation. There is also advice on pre-testing materials, to make sure their message will be understood by the intended audience.
