The Heinemann ELT English Wordbuilder is made up of 60 units. Each unit focusses on one vocabulary area. It starts with a reference section which shows you the words (in bold print) at work, that is to say in context. This is followed by a practice section of exercises and ideas for further written or spoken practice with space for you to add any other expressions you know or meet. The Index at the end of the book contains every word and phrase and so acts as a quick reference guide for you. Some words have a star beside them. You should be careful how you use these. A brief note on each is included in the Key at the back of the book. You will find there are passages to read, some long, a few quite difficult, and many full to the brim with the target vocabulary. There are often checking exercises after them to make sure the words have ´gone in´, that is to say that you have remembered them. There are other exercises, too: matching, gap-filling, defining, ordering, etc. many of which have the answers on the page, which you are asked to cover. The advantage of this is that you can do the exercises again and again if you like, to check how your vocabulary is growing. There are games and quizzes, not really to test your general knowledge but rather to motivate you to study the language under review. (I, personally, would rather be asked to guess - or work out from given data - when, why or in what order certain things happened in Siberia than just read a page of historical facts, for instance. Wouldn?t you?)