This document discusses blogs and wikis and their use in 21st century classrooms. It begins with an introduction to blogs and wikis, explaining that blogs allow for ownership, audience, and organization of information while wikis enable ownership and collaboration. Examples are then provided of how blogs and wikis have been used for classroom websites, journals, book clubs, and paperless assignments. The document concludes by providing examples of wikis created by classes and encouraging the creation of a new wiki to facilitate 21st century learning.