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一、教材分析本章内容属于课程标准中“科学内容”的第2个主题“运动与相互作用”中的一个二级主题.内容标准要求如下:2.3.1通过实验,认识声的产生和传播条件.2.3.2了解乐音的特性,了解现代技术中升学知识的一些应用.知道噪声的危害和控制方法.本章让学生通过丰富多彩的声现象的学习,了解声音是由物体振动产生的;声音的传播需要介质;声波是波的一种;乐音有音调、响度和音色三个特征.对声波的初步了解,有助于学生
First, the textbook analysis The content of this chapter belongs to the second topic of the “science content” “content and content ” content of the second subject “sports content ” content requirements are as follows: 2.3.1 through experiments, to understand the sound Generate and disseminate conditions.2.3.2 Understand the characteristics of musical tones and understand some of the applications of advanced learning in modern technology Know the hazards and control of noise This chapter allows students to learn from the rich and varied acoustic phenomena that sound is generated by the vibration of objects ; The spread of sound requires medium; sound waves are a wave; tones have three characteristics of pitch, loudness and timbre. A sound understanding of the sound waves helps the students