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教学目标1.知道声音是由物体的振动产生的。能够解释各种常见乐器的发声方法。2.能观察、比较、描述物体发声和不发声的不同现象。3.能够对声音的产生原因作出假设,并能够想办法利用实验来验证假设。4.可以借助其他物体来观察不容易观察到的振动现象。
Teaching Objectives 1. Know that the sound is generated by the vibration of the object. Can explain a variety of common instruments sound method. 2. Can observe, compare, describe the different phenomena of sound and silence objects. 3. Be able to make assumptions about the cause of the sound and find ways to experiment with the assumptions. 4. With other objects to observe the vibration is not easy to observe.