《数学新课程标准》明确指出:“把现代信息技术作为学生学习数学和解决问题的强有力的工具,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。”在这一理念的指引下,广大数学教师积极运用多媒体技术辅助教学,大大提高了教学效果。但是,当前教学实践中,也存在着滥用、泛用多媒体的现象,不仅牵制了教师的教,更影响了学生的学。因此,要真正发挥多媒体技术的作用,使其对数学教学起到实实在在的促进作用,就必须准确把握好多媒体 The New Curriculum Standard for Mathematics states that: “Taking modern information technology as a powerful tool for students to learn maths and solve problems is committed to changing students’ learning styles so that students are willing and devote more energy into reality, Exploratory mathematical activities to go. ”Under the guidance of this concept, the majority of mathematics teachers actively use multimedia technology to assist teaching, greatly improving the teaching effectiveness. However, in the current teaching practice, there is also a phenomenon of misuse and universal use of multimedia, which not only hinders teachers ’teaching but also affects students’ learning. Therefore, to truly play the role of multimedia technology to play a real role in promoting mathematics teaching, we must accurately grasp the many media