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在人教版义务教育课程标准实验教科书《物理》八年级下册“现代顺风耳——电话”一节的教学中,在顺利学完第一小节而进入“电话交换机”这节内容的学习时,我预设通过讨论和解答课本上的“想想议议”来让学生理解电话交换机的作用。
In the teaching of compulsory education curriculum standard experimental textbook “Physics” eighth grade “modern downwind - phone ” section of the teaching, after successfully completed the first bar and enter the “telephone exchange” section I presuppose to give students an understanding of the role of a telephone switchboard by discussing and answering the “think-it-discuss” textbook.