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在中学数学教学中,适时恰当地运用多媒体来辅助教学,以形象具体的“图、文、声、像”来创造丰富的教学情景,使抽象的教学内容具体化、清晰化,使学生的思维活跃,兴趣盎然地参与教学活动,有助于学生发挥学习的主动性,积极思考,从而提高教学质量,优化教学过程,增强教学效果。一、运用多媒体,可以有效地突出重点,突破难点 (一)数学教材中的重点内容,仅靠老师讲解,学生有时难以理解,若用多媒体呈现,或动画模拟、或过程演示、或局部放大,效果极佳。例如,球面上两点间的距离计算比较复杂,学生难以掌握,若用传统的边画图,边计算,边讲解的教法,由于解题步骤多,图形要反复涂改,往往使图形混乱不堪,而且难以计算和推理相配合,教学起来很费
In middle school mathematics teaching, it is necessary to use multimedia to assist teaching timely and properly, to create rich teaching scenarios with specific “figure, text, sound and image”, to make concrete and clear abstract teaching contents so that students’ thinking Active and interested in teaching activities, help students play a learning initiative, positive thinking, so as to improve teaching quality, optimize the teaching process, and enhance teaching effectiveness. First, the use of multimedia, you can effectively highlight the key breakthrough difficulties (A) of the key elements of mathematics textbooks, teachers only explain, students sometimes difficult to understand, if using multimedia presentation, or animation simulation, or process demonstration, or partial amplification, The effect is excellent. For example, the calculation of the distance between two points on a spherical surface is complicated and difficult for students to master. If the traditional method of edge drawing and edge calculation is used, And difficult to calculate and reasoning match, teaching up is fee