The main features of each book are:
• lively, challenging and motivating lessons, concentrating on key structures and common vocabulary
• a logical step-by-step presentation of new material
• a grammar reference section summarising the main points at each level
• a lesson-by-lesson list of new vocabulary
• hundreds of amusing and stimulating illustrations, which can be adapted for many different kinds of classroom work
• regular revision tests and self-evaluation questionnaires enabling students to monitor their own progress
• audios with all the dialogues and numerous exercises and drills.