“学起于思,思源于疑。”疑,能促进学生积极思考,激发学生的求知欲。为此,在课堂中精心设计,把“疑”贯穿教学全过程,让学生在激疑、探疑、释疑、存疑中获取新知,主动探究、敏于发现,学会学习。 “Learn from think, think from doubt. ” Doubt, can promote students ’positive thinking, stimulate students’ curiosity. To this end, carefully designed in the classroom, the “suspect” throughout the whole process of teaching, so that students in the suspicion, probing doubt, doubts and doubts in access to new knowledge, take the initiative to explore, sensitive to the discovery, learn to learn.