Wikis

Derived from the Hawaiian word for 'fast', wikis are used across the Web as collaborative authoring tools.
As writing tools, wikis offer advantages over the traditional students' exercise book. They prepare students to write collaboratively in networked environments. Because they are Web-based, no one student gets to take control over the content. All students in a group can easily contribute and edit. Teachers are easily able to comment or to monitor progress and see the variety and level of student contributions.
Wikis can be used for numerous projects in the classroom. They are good vehicles for classes engaged in peer-reviewed projects and could also be used to function as archieved portfolios. They could be used by high school teachers to produce a study guide for each subject (much the same as our university courses), whereby students load their notes and useful external content onto a wiki and continue to build and refine it throught the semester as a real study tool. Students would leave the class with a digital library of what they have learned.
Wikis are geographically agnostic and need not be limited to a classroom. They can be built collaboratively by classes across the country or the world!