笔者在多年的教学中发现,利用学生已有的生活常识或经验,例举生动的贴近生活的实例,将抽象的概念形象化、微观世界具体化,学生容易理解、运用也较自如.比如,在讲解元素和原子的知识时,我就将元素比为水果、原子比作某种具体水果(苹果、梨、桔子、葡萄等,且规定每个苹果、每个葡萄等的个头、质量均相等,并戏称是过去孝敬皇上的).举例1水果是指多汁且有甜味的植物果实,不但含有丰富的营养且能够帮助消化.是对部分可以食用的植物果实和种子的统称.具有某些共同特性的就可称为 The author found in many years of teaching that he used the student’s existing common sense or experience in life and examples of vivid life. The abstract concept was visualized and the microscopic world was embodied. The students could easily understand and use it more freely. For example, When explaining the knowledge of elements and atoms, I compared the elements to fruits and atoms to a specific kind of fruit (apple, pear, orange, grape, etc.) and stipulated that each apple, every grape, etc., were equal in mass, And the joked name is the honor of the emperor in the past.) Example 1 Fruit refers to the fruit of succulent and sweet plants, not only rich in nutrients but also able to aid in digestion. It is a collective name for some of the edible plant fruits and seeds. Common characteristics can be called