人们认识事物总是由具体到抽象,由感性到理性。数学作为一门较为枯燥,抽象的学科,它的课堂教学要重视直观教学已经成为一种共识。在随着科学技术的日新月异,多媒体教学已成为了教育领域中的有效辅助手段。它以容量大、形象直观和生形并茂等特点,为学生创造了有利的学习环境,调动了学生的视听感观,促进了学生积极主动地学习, People always know things from the abstract to the abstract, from the emotional to the rational. Mathematics as a more boring, abstract discipline, its classroom teaching should pay attention to visual teaching has become a consensus. With the ever-changing science and technology, multimedia teaching has become an effective aid in the field of education. It is characterized by its large capacity, intuitive image and viviparous characteristics, creating a favorable learning environment for students, arousing students ’visual and audio-visual perceptions, promoting students’ active and active learning,