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一、图示法符合初中学生心理特点和学习活动的规律 图示法是运用图画、图片、照片和图表、图解等直观教具,对学生进行展示以印证或阐明知识的一种教学方法。它的功能在于辅助文字叙述的不足,突出教材的重点和难点,形象、生动、具体、逼真地表现知识,富有较强的说服力和感染力,并能促使学生再造想象和思维能力的发展。据国外一些实验证明:用语言介绍一种物品,识别它的时间约2.8秒;用线条图介绍,识别时间为1.5秒;用黑白照片介绍,识别时间为1.2秒:用彩色照片介绍,识别时间为0.9秒;如果让学生看实物,识别时间只有0.4秒。由此可见,图示法对提高教学质量是何等重要。
First, the graphic method is consistent with the characteristics of junior high school students psychological characteristics and learning activities Graphic method is the use of drawings, pictures, photographs and charts, diagrams and other visual aids, students demonstrate to confirm or clarify knowledge of a teaching method. Its function lies in supporting the inadequacies of text narratives, highlighting the key and difficult points of the textbooks, and being vivid, vivid, concrete and realistic. It is rich in persuasiveness and appeal, and can prompt students to re-create the development of imagination and thinking skills. According to some experiments abroad, it is proved that: Introduce an item in a language and identify it in about 2.8 seconds. Introduce it with a line drawing, and the recognition time is 1.5 seconds. With a black-and-white photograph, the recognition time is 1.2 seconds. Introduce color photos to identify the time. 0.9 seconds; if students are allowed to see the real thing, the recognition time is only 0.4 seconds. From this we can see how important the graphic method is to improving the quality of teaching.