《新课程标准》中有六个核心概念:数感、符号感、空间观念、统计观念、应用意识、推理能力,数感被摆在首要位置,可见新课程对此问题的强调和重视。良好的数感起着探索的导航器作用——能在具体的问题情境中迅速洞察数、形式之间的内在联系,从而选择适当的解决方法。引领学生走进数感世界,学会用数学方式思考和解决现实问题,是每个学生必须具备的基本数学素养。一、在体验中培养学生数感《数学课程标准》强调:“要引导学生联系自己身边具体、有趣的事物,通过观察、操作、解决问题等丰富的活动,感受数学的意义,体会数用来表示和交流的作用,初步建立数感。”例如,在教学“数的整除”一章时,许多学生对“素数、合数、奇数、 There are six core concepts in the New Curriculum Standard: sense of number, sense of symbol, concept of space, concept of statistics, sense of application, reasoning ability, sense of number, and so on. This shows that the new curriculum emphasizes and emphasizes this issue. A good number feels as a navigator for exploration - the ability to quickly see the inherent relationship between numbers and forms in a particular problem situation, and to choose the appropriate solution. Leading students into the number of sense of the world, learn to think and solve mathematical problems in real life, every student must have the basic mathematical qualities. First, the number of students in the experience of training flu ”Mathematics Curriculum Standard“ emphasizes: ”To guide students to contact their own specific, interesting things, through observation, operation, problem solving and other rich activities, feel the significance of mathematics, experience the number of For example, in the chapter titled “Dividing Divide Numbers” in teaching, many students are not familiar with "prime numbers, composite numbers, odd numbers,