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. From planets to animals to sunken treasure, things are discovered every day. This reader shows the ways in which people and explorers can find things they missed - or never even knew were gone! Use the unique code inside the book to access the online reader, complete with videos and interactive exercises. Word count: 2647. Lexile reading level: 850L