Teaching and learning have always had a collaborative element, but wiki technology has in recent years made collaboration central to the method of many educators. Since they can be edited by anyone with access to them, education wikis are ever-changing and evolving documents that ideally represent the wisdom of the student crowd. Teachers are constantly finding new and creative ways to use wikis. One college new media class is writing its own textbook, for instance. Science classes are using wikis to develop research proposals.