转变教师角色．创设课堂教学互动对话模式．把学习过程优化为体验过程、探究过程、合作过程。让学生主动构建知识，发展学习潜能，激发创造性思维产生，从而提高生物课堂教学有效性。%In order to optimize the learning process to be a process of experiencing,inquiry and cooperation,it is necessary to construct an intercommunicative mode in class through the transformation of teachers＇ role.The way to improve the efficiency of biology class teaching is to let students initiatively find out the knowledge,to develop their learning potential and to arouse the generation of their creative ideas.
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