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利用身边器材、生活用品做简易实验,比用正规仪器做实验往往更有价值,因为它更贴近于学生生活实际,能更有效地激发学生学习物理的动机和兴趣,也有利于引领学生利用生活用品或自制教具探究物理问题,培养动手、动脑自制教具的意识。下面是用饮料瓶制成教具来探究的一些物理实验。一、演示声音的产生和音调对着饮料瓶口向瓶内吹气,使之发声并能感受到瓶子在振动,说明空气柱能振动发出声音。取两个大小不同饮料瓶,分别向瓶内吹气并辨别声音,发现这两个声音并不相同,一个声音清脆、尖细,另一个粗犷、浑厚,两个声音音调不同,同时也可以说明音调高低与空气柱的体积大小有关,体积小音调高。
It is often more valuable to experiment with the use of equipment and supplies than to use regular equipment because it is more relevant to students ’actual conditions and can stimulate students’ motivation and interest in learning physics more effectively. It also helps lead students to use life Supplies or self-made teaching aids to explore physical problems, training hands-on, self-made teaching aids awareness. Here are some physics experiments explored using aids made from drink bottles. First, the demonstration of sound generation and tone Bottle blowing to the bottle to make it sound and feel the bottle in the vibration, indicating that the air column can vibrate sound. Take two different sizes of beverage bottles, respectively, to the bottle blowing air and identify the sound and found that the two sounds are not the same, a voice crisp, pointed, the other rough, vigorous, two sounds different tone, but also that Pitch level and the size of the air column size, small size, high tone.