Cambridge Discovery Education Interactive Readers are the next generation of graded readers - captivating topics, high-impact video, and interactive exercises designed to motivate and engage. How do you travel? By plane, boat, bicycle...elephant? Discover the many efficient and unusual methods people have invented to get from place to place. Use the unique code inside the book to access the online reader, complete with videos and interactive exercises. Plus, download a free e-book version of the reader!