The document discusses using mobile devices like cell phones and iPods in K-12 classrooms. It provides examples of schools that have relaxed policies to allow educational use of mobile devices, including one principal who found most students already had phones. The document outlines ways teachers have used mobile devices to improve participation, communicate with parents and students, extend learning outside of class, and connect classroom lessons to the real world. These include translating Shakespeare to text speak, creating mobile novels, using QR codes and mobile apps for assignments, and recording field trips. Benefits mentioned are increased participation, communication, and engaging students with technology they use outside of school.