"This six-level series of factual readers allows English language learners to explore a variety of fascinating real-world topics. 
Each reader has been carefully graded to reinforce the main structures and vocabulary covered in most major language courses. 
The use of the plus symbol (+) highlights the increased level of challenge in language as compared to a standard reader; reflecting the focus on content learning. 
Level 1+ Level 2+ Level 3+ Level 4+ Level 5+ Level 6+ 
Includes a glossary with explanations of key vocabulary 
Free teaching note, audio and exercises available at www.macmillanyounglearners.com/readers 20 new titles added for 2013."