1) The document discusses using technology in 21st century classrooms to build virtual learning environments for students using tools like cell phones, email, iPods, and iPads.
2) It describes the roles of 21st century teachers, learners, and teaching which involve embracing new technologies and facilitating the learning process with innovations in technology.
3) Key elements of a 21st century classroom include SMART technologies like interactive whiteboards, projectors, and student devices to give students a larger role in their own learning.