论文部分内容阅读
以往在讲授机械波这一内容时,一般采用挂图,条件好一些的则使用幻灯片或投影片等来辅助教学,由于不能很好地展示机械波的动态过程,许多学生难于完整理解机械波中的周期、波长、频率和波速的概念以及相互之间的关系,影响教学效果。如今,计算机技术的快速发展使我们可以很方便地设计出计算机辅助教学课件,许多网站也提供各种通用的多媒体课件。笔者根据自己在教学中碰到的实际情况,利用FLASH软件有针对性地设计了一个有关机械波的课件,模拟实际的波动传播过程、与圆周运动的比较等,分析起来形象直观,便于学生理解。下面详细加以说明。
In the past, when teaching mechanical waves, the use of wall charts was generally adopted. In better conditions, slides or slides were used to assist teaching. Because the dynamic process of mechanical waves could not be well displayed, many students could not fully understand the cycle in mechanical waves. The concept of wavelength, frequency and wave speed and the relationship between them affect the teaching effect. Today, the rapid development of computer technology allows us to easily design computer-aided instructional courseware. Many websites also provide a variety of versatile multimedia courseware. According to the actual situation encountered in teaching, the author used FLASH software to design a courseware related to mechanical waves in a targeted manner to simulate the actual wave propagation process and compare with the circular motion. The analysis is intuitive and easy for students to understand. The following is a detailed description.