初中植物课《叶的光合作用》,重点在于讲解光合作用,涉及到生物生理知识,学生不易掌握,而光合作用所需的能量、过程及产物等内容又是本章节的难点所在。教材要求采用演示实验来讲述这一生物生理过程。但这些实验受课时限制与气候条件的影响,故两课时内完成教 The junior high school plant class “Photosynthesis of Ye” focuses on the explanation of photosynthesis. It involves knowledge of biophysics and is not easy for students to master. The energy, processes, and products needed for photosynthesis are the difficulties in this chapter. The textbook requires demonstration experiments to describe this biophysiological process. However, these experiments were affected by the time constraints and climatic conditions.