一、教学目标知识与技能:了解驻波现象,知道波腹和波节概念;知道驻波是怎样产生的;了解各类乐器的发声原理;掌握应用 v=λf计算、分析有关驻波简单问题的方法.过程与方法:在问题情境驱动下,通过学生分析问题寻求解决问题的科学方法;让学生自主采集信息、处理数据,以形 First, the teaching objectives of knowledge and skills: to understand the phenomenon of standing waves, to know the concept of antinodes and nodes; know how the standing wave is generated; understand the principle of sound of various instruments; master application v = λf calculation, analysis of the simple problem of standing waves Process and method: Under the circumstance of problem situation, we should seek students’ scientific method to solve the problem by analyzing the problem; let the students acquire the information autonomously, deal with the data,