Educational tools of Web 2.0 like Flickr, Delicious, and Bubbleshare can expand curriculum by supporting a new collaborative learning environment. Web 2.0 represents a shift from static to social web where users can create and share knowledge. Common Web 2.0 tools for classrooms include social bookmarking sites to share research bookmarks, photo sharing sites to post presentations, and wikis or blogs for collaborative document writing and discussion.