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九年义务教育初中物理(人教社版)第一册第三章第一节声音的发生和传播,图3—2演示:“声音靠介质传播”实验是一套设计合理、现象明显的新增演示实验。成功的演示实验,是本节教学的重要环节。但是,我县62位初中物理教师在教学中实验的成功率较低,观察到的现象很不理想,悬挂的小球很难看出被音叉叉股弹起,并且,找不出实验失败的主要原因。为此我们对本实验进行了深入研究,并找到了失败的原因,摸索出做好实验的规律。
Nine-year compulsory education junior high school physics (human education society edition) Volume I Chapter 3 Chapter 1 The occurrence and spread of sounds, Figure 3-2 demonstrates: “The sound depends on the media to spread” experiment is a set of reasonable design, obvious new phenomenon Increase demonstration experiment. A successful demonstration experiment is an important part of this section of teaching. However, the success rate of the 62 junior high school physics teachers in the county was low in the experiment. The observed phenomenon was very unsatisfactory. It was difficult to see that the suspended small ball bounced out of the tuning fork, and that the main failure of the experiment could not be found. the reason. For this reason, we conducted an in-depth study of the experiment and found the reasons for the failure, and worked out the rules for doing experiments well.