数学情境是学生掌握知识、形成能力、发展心理品质的重要源泉,是沟通现实生活与数学学习、具体问题与抽象概念之间的桥梁.一个良好的数学情境,能诱发学生思维的积极性,引起学生更多的联想,也比较容易调动学生已有的知识、经验、感受和兴趣,从而自主地参与知识的获取过程、问题 Mathematical situation is an important source for students to master knowledge, form ability and develop psychological quality, and is a bridge of communication between real life and mathematical learning, concrete problems and abstract concepts.A good mathematical situation can arouse the enthusiasm of students’ thinking and cause students More associations, but also easier to mobilize the students have the knowledge, experience, feelings and interests, which autonomously involved in the process of knowledge acquisition, the problem