Twitter, Google Docs and their cousins shrink the spaces between cultures even as they expand the reach of a typical classroom. How can a teacher use them to promote social justice? In Sarah Brown Wessling's English class, students are about to give Little Red Riding Hood a makeover. For weeks, her students at Johnston High School in Johnston, Iowa, have been breaking down several classic fairy tales, discussing ways in which they both construct and confirm their ideas about gender roles. Using examples from the stories, they then dig deeper--exploring concepts such as oppression and objectification in society. Finally, in a culminating activity called the Genders Game, Wessling challenges groups of students to rewrite the familiar tales. Immediately, students turn to Google Docs--a free, Web-based service that allows users to create and edit documents while collaborating with each other in real time. Wessling, the 2010 National Teacher of the Year, could just as well be talking about today's teachers and their use of Web-based technologies and social media tools such as Facebook and Twitter. In her classes, she has seen their value in fostering collaboration and in extending the learning experience beyond the 50-minute block.