This document provides an overview of action research, including its history, key characteristics, types, design process, and role of reflection. Action research began with Kurt Lewin in the 1940s and aims to solve practical problems through participatory and cyclical research. It positions itself within the critical theoretical research paradigm as research done "with" rather than "on" or "for" people. The presentation reviews action research methodology, emphasizing its practical and collaborative nature. It also addresses validity, ethics, and the importance of reflection in the action research process.