Student's progress easily from one unit to the next, using a combination of pictures and text to discover how English works. It consists of a total of 20 units arranged in groups of five. The first four units have students practice as they learn and contain words and phrases to be learned in that unit, together with pronunciation guide. At the end of each unit a story which uses the language that has just been learned is presented. The fifth unit in each group is designed to reinforce the language learned in the first four units. Each volume is sold separately. Paperback. 192 pages.