1. Help researchers choose research questions and determine the research direction. Literature provides the basis for scientific research topic selection.

2. Provide scientific basis and research methods for educational scientific research. Literature is an effective way to track and absorb academic thoughts and latest achievements at home and abroad, understand the frontier trends of science and obtain new information.

3. Avoid duplication of work and improve scientific research efficiency. Literature provides information for scientific research, so that researchers can fully possess the materials, thus avoiding repeating the work of predecessors or even repeating the same mistakes.

Primary school is a school where people receive primary formal education. It is an important part of basic education and belongs to the category of nine-year compulsory education.