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演示是教师在上课时配合讲授和谈话,呈示各种实物或标本模型、图画等直观教具,或做示范性实验的一种教学方法。它的目的是让学生获取感性材料,加深学习对象的印象,把课本上的理论知识与实际实物联系起来,帮助学生形成正确、深刻的概念。教师演示,首先明确课本中的知识重点,根据教材内容把实物、标本、图片、或替代材料、仪器准备充分;讲述时语言要清晰、简练准确、生动,对结论进行有条理地板书。另外,从所演示的对象出发,加以必
Demonstration is a kind of teaching method that teachers can coordinate with lectures and conversations during class to present visual aids such as various kind or specimen models and drawings, or to make demonstration experiments. Its purpose is to enable students to obtain perceptual material, deepen the impression of learning objects, and to connect the theoretical knowledge of the textbooks with the actual objects to help students form correct and profound concepts. Teacher demonstration, the first clear knowledge of the textbook focus, according to the contents of the teaching material, objects, pictures, or alternative materials, equipment preparation; when the language should be clear, concise and accurate, vivid, the conclusions of the structured floor book. In addition, from the demonstration of the object, to be necessary