CDIR HIGH-INT UP IN AIR: OUR FIGHT AGAINSB GRAVITY BK/ONLINE

Cambridge Discovery Education Interactive Readers are the nextgeneration of graded readers - captivating topics, high-impact video,and interactive exercises designed to motivate and engage. Humans have never been content to just stay on the ground. Learn about thehistory of flight from the early planes of the Wright Brothers to thethrilling sport of BASE jumping. Use the unique code inside the bookto access the online reader, complete with videos and interactiveexercises. Plus, download a free e-book version of the reader!