This document provides an overview of using Wikipedia as an educational tool for teachers. It discusses how Wikipedia can provide a free and open education for students in the digital age. It encourages teachers to have students read, cite, edit, and conduct research on Wikipedia articles. It argues that Wikipedia is a global collaborative community that covers a wide range of topics and is an important platform today. The document also addresses issues like reliability, meaning construction, and who owns knowledge on Wikipedia. It provides ideas for how teachers can incorporate Wikipedia into class assignments and debates.