Have you seen the exciting roster of Hour of Code ambassadors who will welcome classrooms to their first Hour of Code during Computer Science Education Week (Dec 8 – 14)? 100 lucky classrooms across the United States will be selected to participate in 15-minute video Q&As with tech titans like Sheryl Sandberg, Bill Gates and Tumblr founder David Karp and tech-loving celebrities Usher, Karlie Kloss and Ashton Kutcher. Anybody can participate in the Hour of Code — no experience needed, no computers either. Ages 4 to 104. If you want your classroom to win a chat with one of these Hour of Code ambassadors, sign up to host an Hour of Code. See details for qualifying.