《数学课程标准》指出:“把现代信息技术作为学生学习数学和解决问题的强有力工具,致力于改变学生的学习方式,使学生乐意并有更多的精力投入到现实的、探索性的数学活动中去。”现代信息技术既能向学生快速提供丰富多彩的集图、文、声于一体的教学信息,又能为学生提供生动、友好、多样化的交互方式。因此,运用现代教育信息技术手段能激发学生的学习兴趣,增强信息强度,增大信息密度,调动学生多种感官参与学习, The Mathematics Curriculum Standard states: “Modern information technology as a powerful tool for students to learn math and solve problems is committed to changing the way students learn, making students more willing and able to devote themselves to realistic and exploratory Mathematics activities. ”Modern information technology can not only provide students with quick and colorful teaching information of pictures, texts and sounds, but also provide students with vivid, friendly and diversified interactive ways. Therefore, the use of modern educational information technology can stimulate students ’interest in learning, enhance the intensity of information, increase the density of information, mobilize students’ multiple senses to participate in learning,