This document provides an overview of Moodle, an open-source learning management system. Moodle allows teachers to create online courses, lessons, quizzes and more. It has over 9 million users in 200 countries. The document highlights how Moodle can be used for differentiated instruction, assessments, collaboration and communication. It provides several starting points for teachers interested in learning more about Moodle including demo sites, tutorials and training videos. In the last section, the author emphasizes that teachers are agents of change and that online learning platforms like Moodle give them new tools to transform education.