Adopt flexible teaching methods.

1, using metaphors to solve problems skillfully. The structure of cell membrane is like peanut cake: peanuts are like protein molecules, popcorn is like phospholipid molecules, and peanuts are covered, embedded or penetrated at different depths.

2. Use poetry to add interest. For example, there are two ways for substances to enter and leave the cell membrane: free diffusion, which can be vividly expressed as "flying down the three thousands of feet"; "flying down" means that no energy is needed; "straight down" means that from high concentration to low concentration, no carrier is needed, and active transportation can be vividly expressed as "sailing against the current" and "sailing against the current", which means that it is needed from low concentration to high concentration. For example, when talking about the protective color of biology, I quoted Yang Wanli's poem: "Children are scrambling to catch up with Huang Die, and flying into cauliflower is nowhere to be found." .

Digitization of difficult knowledge. Five-carbon sugars, bases and nucleotides in nucleic acid are recorded as "258", and amino acids, bases on mRNA and bases on genes in protein synthesis controlled by DNA are recorded as "136".

The process of education is also a process of socialization. Research shows that the key and final result of human socialization lies in the formation of personality and the development of human autonomy, initiative and creativity. And an effective way of socialization is interpersonal communication.

Therefore, cooperative and interactive learning among students is conducive to the development of students' subjectivity. Biology itself is a practical subject. In teaching, we should set up more practical activities, so that students can cooperate in learning, and then exchange, discuss and inspire each other in cooperation.