“学起于思,思源于疑”。任何科学家的发明创造,都是首先从提出问题开始的。课堂教学不能光有教师提问,学生被动回答,而无学生思考问题,提出问题的余地。在数学教学中,要使学生多思善思,必先多问善问。疑问是思维的开端,思维应从问题开始。学贵知疑,一个好的教师不仅要善于设问,不断设疑激疑,使知识点转化为学生认知中的矛盾,而且要满腔热忱地促使学生质疑,鼓励学生提出问题。长此以往,就会养成积极提问、乐于思考 “Learn from think, think from suspect ”. The invention of any scientist starts with asking questions. Classroom teaching can not just ask teachers questions, students respond passively, without the student thinking problems, ask questions. In mathematics teaching, to make students ponder thoughtfulness, we must first ask more questions. Doubt is the beginning of thinking, thinking should start from the problem. Learn your knowledge of doubt, a good teacher should not only be good at asking questions, constantly suspicious of suspicion, the knowledge point into the student’s cognitive contradictions, but also enthusiastic to urge students to question and encourage students to ask questions. Over time, it will develop a positive question, willing to think