一、创设情境,提出问题通过创设一定的情境,帮助学生主动地投入到探究过程中,由于高中学生已具有一定的抽象思维能力,他们会通过感知材料,积极思考,带着富有挑战和价值性的问题参与学习过程,怀着一定程度的好奇心和求知欲,这正是问题意识的萌芽,也是探究活动的开始。教学中教师精心设置问题情境,帮助学生主动地投入到教学活动中去,为学生接下来的自主探究学习作好铺垫,引导学生将客观的知识转化为主观的知识,这应是一个由教师具体引导到学生独立发现和提出问题的渐进过程。二、合作交流,变式探究 First, create the situation, ask questions By creating a certain context, to help students actively involved in the exploration process, because of high school students already have a certain degree of abstract thinking, they will through the perceived material, positive thinking, with a challenging and valuable The question of participation in the learning process, with a degree of curiosity and curiosity, is precisely the germ of problem awareness and the beginning of inquiry activity. Teaching teachers to carefully set the problem situation to help students take the initiative to put into teaching activities in order to pave the way for students to follow the independent inquiry learning and guide students to objective knowledge into subjective knowledge should be a teacher-specific Lead to a gradual process where students discover and ask questions independently. Second, cooperation and exchange, to explore variants