华罗庚曾经说过,对数学产生枯燥乏味、神秘难懂的印象的主要原因就是脱离实际。然而现实的生活材料,不仅能够使学生体会到所学内容与自己接触到的问题息息相关,而且能够大大调动学生学习数学的兴趣,使学生认识到现实生活中隐藏着丰富的数学问题。因此,数学学习材料的选择应十分注意联系学生生活实际,注重实效性。怎样搜集与生活联系紧密的数学信息? Hua Luogeng once said that the main reason for the dull, mysterious and difficult impression of mathematics is that it is out of touch with reality. However, the realistic living materials not only make students realize that what they learn is closely related to their own problems, but also greatly arouse their interest in learning mathematics and make students realize that there are many math problems hidden in real life. Therefore, the choice of mathematics learning materials should pay great attention to contact students actual life, pay attention to actual effect. How to collect and life closely linked to the mathematical information?