Action research in education aims at addressing the learning problems in the classroom context. Here are some videos that may explain to you what it is:
Conscious Educating. (2009). Action research in the classroom Part 1.
Conscious Educating. (2009). Action research in the classroom Part 2.
You may get an overview by clicking the URL given below:
Ferrance, Eileen. (2000). Action research.
Sagor, Richard. (2000). Guiding school improvement by action research. Chapter 1: What is action research?