国家中学生物课程标准研制组核心成员——赵占良老师曾指出:“探究发端于问题,在课堂上教师能否提出有效的问题,能否引导学生发现问题、提出问题是一节课成败的关键,在一定程度上关系到课程改革的成败.”思维总是从提出问题开始的.“学起于思,思源于疑.”教学中由提出问题到解决问题是训练思维的基本过程.在生物教学中,教师要通过提出问题,创设新异的教 The core member of the national middle school biology curriculum standard development group - Zhao Zhanliang pointed out: “The exploration starts from the problem. In the classroom, teachers can put forward effective questions. Whether they can guide the students to discover the problems or ask the questions is the key to the success or failure of a lesson , To a certain extent, related to the success or failure of curriculum reform. ”Thinking always starts with asking questions. “ Learning from thinking, thinking from suspicion. ”Teaching from the question to solve the problem is the basic process of training thinking In biology teaching, teachers should create new and different teachings by asking questions