认知冲突一般表现为学生现有的旧知与新知之间存在某种差距而导致的心理失衡。这种心理失衡有助于激发学生求知欲望,有利于加强学生分析问题和自主创新的能力,让主动学习有效发生。一、在动手操作中酝酿认知冲突动手操作是思维能力的源泉,它使抽象的数学问题具体化、形象化、趣味化。《数学课程标准》也指出:要让学生经历数学知识的形成过程。小学生的理解、记忆是建立在学生的直观操作、动手实践基础上,只有学生通过自身感受、自我探索获得 Cognitive conflict generally manifests itself in psychological imbalance caused by the existence of a certain gap between the existing old knowledge and new knowledge of students. This psychological imbalance helps to stimulate students ’desire for knowledge, helps to strengthen students’ ability to analyze problems and innovate independently, and enables active learning to take place effectively. First, brewing cognitive conflict in hands-on operation is the source of thinking ability, it makes the abstract mathematical problems specific, visual and interesting. The Mathematics Curriculum Standard also states: Let students experience the formation of mathematical knowledge. Pupils ’understanding and memory are based on the students’ intuitive operation and hands-on practice, and only the students obtain themselves through their own feelings and self-exploration