1. Classroom teaching

Classroom teaching is one of the important ways of teaching, the main position to teach students concepts, basic knowledge, principles and skills, and the main place to infiltrate environmental education and let students have a conceptual overall understanding of environmental education in theory. Therefore, in classroom teaching, it is necessary to combine the environmental protection content in the teaching materials, infiltrate environmental education, and carry out long-term subtle environmental education for students in order to achieve better results.

For example, when explaining the composition of the ecosystem, we can cite many kinds of ecosystems, and at the same time we can contact the food chain and food web in the ecosystem, and we can also contact the self-regulation ability of the ecosystem, which shows the limitations of this ability. For example, a river is an ecosystem, and there are tens of thousands of creatures in the river. There is one of the simplest biological chains, big fish eat small fish, and small fish eat shrimp. Once any link in this biological chain is destroyed, one of the creatures will disappear, and then the other two species may become extinct. For example, the river itself has self-purification ability, and it can automatically clean up and recover after a period of time for general mild pollution. The function of the self-purification system requires that the pollution should be within a certain range. Once beyond this range, this ability may disappear and the river will no longer be clear. At the same time, fish, shrimp, algae and other organisms living in the river will also be polluted. Then if we humans eat these polluted creatures in the river, food poisoning and even life-threatening situations may occur. This kind of explanation can make students understand the relationship between environment and biology more vividly, understand the importance of environmental protection, stimulate students' enthusiasm for environmental protection, and make environmental education penetrate more thoroughly.

2. Practical activities

Now high school teaching and students' knowledge are not limited to textbooks. Some practical activities of environmental protection can make students feel the importance of environmental problems and inspire high school students to use their brains to find solutions. At the same time, we urge them to link the knowledge of biology and environmental protection learned in class with practical activities and apply it to practice to solve some environmental problems in daily life. Practical activities are also a good place for environmental education, which can stimulate students' enthusiasm and curiosity. For example, the investigation of plant species can be carried out on campus, or extended to the investigation of plant species near campus, or extended to parks, suburbs and other places for investigation activities. Another example is to organize students to visit factories such as papermaking, plastics and cement. These practical activities can help students better understand the importance of environmental protection and improve their awareness of environmental protection.

3. Inquiry learning method

Carrying out inquiry activities can enhance students' understanding of environmental protection knowledge, make students apply the environmental protection knowledge they have learned in class to real life, and also better penetrate environmental education. For example, when explaining the photosynthesis and carbon-oxygen balance of green plants, students can participate in campus greening activities. Teachers can throw a topic about the environment for students to discuss and guide freely, and then draw a conclusion through a series of inquiry activities.

4. Special lectures and environmental publicity

In the teaching process, some students can be inspired to give special lectures on the environment-related contents they are interested in, such as sustainable development, the utilization of natural resources, and the living environment of organisms. In addition, special lectures and public welfare activities can be held in senior high school biology courses in combination with festivals such as Arbor Day, Earth Day and World Environment Day. Through these publicity, students' awareness of environmental protection is improved, their environmental protection behavior is stimulated, and the effect of environmental education is also improved.