Action research is a method used by teachers and educators to study practical problems and improve their practices. It involves identifying an issue, collecting and analyzing data, and implementing changes. There are two main types - practical action research focuses on improving specific situations, while participatory action research takes a more social and collaborative approach aimed at emancipation. Action research was developed in the 1930s and involves teachers studying their own classrooms. The process is cyclical as findings are used to revise practices.