1. survey method: it is a method to collect materials about the actual situation or historical situation of the research object purposefully, planned and systematically. Investigation is a basic research method commonly used in scientific research. It comprehensively uses historical methods, observation methods and scientific methods such as talks, questionnaires, case studies and tests to have a planned, in-depth and systematic understanding of educational phenomena.

2. Observation method: Observation method refers to a method in which researchers use their own senses and auxiliary tools to directly observe the research object according to a certain research purpose, research outline or observation table, so as to obtain information.

3. Experimental method: Experimental method is a scientific research method to discover and confirm the causal relationship between things by changing the main branches and controlling the research objects.

The difference between liberal arts and science and engineering:

Science is commonly used, such as quantitative analysis, experimental methods, empirical research methods, mathematical methods and so on. There will be some differences according to different papers. Even liberal arts and science will be divided into more details, instead of just saying liberal arts and science in general. For example, in science, you may have different research methods in mathematics, chemical physics architecture, communication engineering and so on.