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演示实验是教师在课堂上结合教学内容做的演示给学生看的实验。它在物理教学特别是初中物理教学中具有十分重要的作用。它能化抽象为具体,化枯燥为生动,把要研究的物理现象清楚地展示在学生面前,引导学生观察思考并使之正确认识物理事实,帮助其更好地掌握物理概念和规律,达到“事半功倍”的效果。要使演示实验真正达到演示目的要完成此项工作,应该做好以下工作:1课前要有充分准备有的教师轻视课前演示实验的准备工作,结果会造成演示
Demonstration experiment is a demonstration that the teacher sees to students in the classroom with the teaching content. It plays an important role in physics teaching, especially junior high school physics teaching. It can be abstracted as a concrete, dull and vivid, to study the physical phenomena clearly displayed in front of students, to guide students to observe and make the correct understanding of physical facts, to help them better grasp the concept of physics and laws to achieve “Do more with less” effect. To make the demonstration experiment really achieve the purpose of demonstration To complete this work, we should do the following: 1 before the full preparation of some teachers to prejudice the pre-demonstration experiment, the result will be a demonstration