The principle of the unity of science and education means that in classroom teaching, teachers should teach students knowledge that truly reflects the truth of objective things, make the teaching content strictly scientific, and combine it with knowledge teaching, so as to educate students in ideological and moral education and make teaching educational. This principle requires correctly handling the contradictory relationship between imparting knowledge and carrying out ideological and moral education in classroom teaching.

Teachers should guide students to directly perceive things and models, or describe teaching objects through teachers' image language, so that students can gain rich perceptual knowledge. This principle requires correctly handling the contradictory relationship between rationality and perceptual knowledge in teaching. Teachers should give full play to the leading role, mobilize students' enthusiasm and consciousness to the maximum extent, stimulate students' thinking activities, enable students to actively explore knowledge and enhance their ability to analyze and solve problems independently.

Brief introduction of teacher qualification certificate:

Teacher's qualification certificate is the license of teachers in the education industry, which is uniformly printed by the education administrative department of the State Council and can be applied for in colleges and universities. Teachers' qualification certificates need to take a series of social examinations such as certification examinations before they can be certified. In 20 15, the reform of teacher qualification examination was formally implemented, and the teacher tenure system was broken, and the first instance was held in five years. After the reform, the national examination will be implemented, which increases the content and difficulty of the examination.

At the end of the registration year, China citizens who have not reached the national statutory retirement age, have the qualifications of teachers as stipulated in the Teachers Law and are willing to engage in teaching can apply for and legally recognize the qualifications of teachers in kindergartens, primary schools, junior high schools, senior high schools and secondary vocational schools (including internship guidance). The level of Putonghua should reach the second level or above in the Standard of Putonghua Proficiency Test issued by the State Language Committee.