Chemistry is a discipline with a close tie to biology the and real life. It plays an important role in improving the integration of disciplines and fostering teenagers’ competence of application. Thus, it is significant to incorporate life cases and biology knowledge into junior chemistry teaching.This paper is based on the theories of life education, learning transfer and constructivism. Besides, it is based on junior school students’ physical and psychological features and junior chemistry curriculum. To begin with, the paper combs the knowledge points about protein, sugar, and fat in chemistry and biology at junior high school. Then it collects lots of life cases related to these points. After that, three lesson plans about “Proteinâ€, “Sugar†and “Fat†are designed according to the title of Human beings’ main nutrients. Then by making a questionnaire, the researcher tests the research objects and does the action research, i.e., carrying out trial teaching in the object class, carrying out routine teaching in reference class and so on. Later, the trail effects will be tested by means of making a questionnaire and interview with students. To sum up, the research aims to improve the integration of disciplines and strengthen life teaching.The research result shows that teaching chemistry in junior high school by combining discipline knowledge and life reality is necessary. Moreover, integrating chemistry knowledge and biology knowledge not only arouses students’ interests and enthusiasm in learning, but also deepens their understanding of discipline knowledge. Meanwhile, it strengthens students’ competence of application and improves their competence of innovation, which is beneficial to students’ all-around development and cross-discipline professional talents. What’s more, the new teaching approach will help students form scientific and reasonable diet ideas, so that they will pay more attention to how to balance their diet and live a healthier life than before. All of those above will lay a solid foundation for students to live better in the future. |