Diagrams, mind-maps, tables, graphs, time lines, flow charts, sequence diagrams, decision trees: all can be used to organise thought. This unit will introduce you to a variety of thinking skills. Asking and answering questions is at the heart of high-quality thinking. Questions naturally arise from the desire to know and learn about things and may be the starting point for a journey of understanding. This study unit is just one of many that can be found on LearningSpace, part of OpenLearn, a collection of open educational resources from The Open University. Published in ePub 2.0.1 format, some feature such as audio, video and linked PDF are not supported by all ePub readers.