Educational action research is a practical research method, which aims to solve the problems and challenges in the field of education. It usually includes data collection, data analysis and the implementation of intervention measures in the teaching process, aiming at enhancing the learning experience and promoting students' academic performance.

The following are several types and examples of educational action research:

Research in the field of single education: This type of research usually involves a specific educational field or topic, such as reading, mathematics or foreign language teaching. For example, teachers can use educational action research method to study students' reading comprehension ability, collect data, and formulate teaching intervention measures according to the data, so as to improve students' reading comprehension level.

Educational curriculum research: This kind of research usually focuses on how to develop and implement effective curriculum and teaching plan. For example, educators may study how to set up educational courses for specific groups of people to help improve their academic performance.

Educational strategy research: This kind of research aims at evaluating the effectiveness and influence of different educational strategies and helping to formulate better educational policies. For example, policy makers can use the educational action research method to investigate the effect of a certain policy and then make corresponding improvements or adjustments.

Education system research: This kind of research focuses on the reform and improvement of the whole education system. For example, the educational action research method can be used to evaluate the efficiency and fairness of some educational systems, and educators can use these data to put forward practical improvement plans and implement them.

In a word, educational action research can be applied to various educational practice and policy fields. By collecting data and formulating intervention measures according to the data, educators can better understand the learning process and establish more effective teaching methods, thus improving students' learning effect.