This 4th Edition of Action Research introduces practicing educators to the process of conducting classroom-based action research. The book's practicality stems from its focus on research methods and procedures that educators can use with their everyday instructional practices, classroom activities, and school procedures. In this new fourth edition, Craig Mertler has added coverage of high interest topics like teacher empowerment and evaluation, Google Scholar, mixed-methods research designs, ethics and much more. NEW TO THIS EDITION: *Enhanced discussions on ethics and action research to help students better maneuver ethical dilemmas that arise in action research *Discussions of two Action Research Portraits, offering students a more comprehensive look at the process of an action research project *Enhanced discussions of how to write an action research report and how to incorporate APA style, preparing students to successfully complete a report by the end of the course.