ABSTRACT
This book concerns successful instructional diagrams and, as explained earlier, the instructional success of a diagram is only partly due to its design. Even quite poorly designed diagrams, or those that seem too difficult for a particular group of learners, can be made instructionally more effective by embedding them in a suitable context. So, as well as providing guidance for the development of new diagrams, we will look at ways to make existing diagrams more successful as aids to instruction. Of course the ideas we will look at here are equally applicable to new (well-designed) diagrams that you produce yourself. These ideas should be considered whenever an instructional resource is being developed that will include diagrams (especially when the target learners are unlikely to have extensive experience or high levels of skill in dealing with diagrams).
