Amazon.com description: Product Description: 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. Learn what it's like to live in the tundra, beside ancient pyramids, or near the Great Barrier Reef! Explore the food, clothing, architecture, and wildlife of these three special places. 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!