一、教学设计(一)学情分析初三的学生对声音的文学描述已有了一定的基础,加之在日常生活中接触过各种各样的声音,学生对声音的产生、传播、人耳听到声音的过程等有了很好的了解.由于学生刚刚接触声现象的知识,对声现象虽然也有一定的生活体验,但对声现象的整 First, the teaching design (A) Analysis of students The third day of the students have a certain degree of literary description of the sound, combined with exposure to a variety of voices in daily life, students on the sound generation, dissemination, Hear the sound of the process has a good understanding of the students just because of exposure to the phenomenon of acoustic knowledge of the phenomenon, although there is a certain life experience, but the sound phenomenon