"Challenges" is a new four level course for teenagers which gives them everything they need to be successful in learning English. "Challenges" provides coursebook that can be completed in one year, giving students a clear sense of progress, informative and engaging topics that involve teenagers in their learning, unique feature on word building, text building and sentence patterns, characters that promote positive values and use real spoken language, strong grammar and skills section to give students confidence in using the language, a full Word Bank that is easy to use and unique teacher's package that gives total support and maximum flexibility.