《数学课程标准》强调“:数学活动必须建立在学生的认知发展水平和已有的知识经验基础之上,教师应激发学生的学习积极性,向学生提供充分从事数学活动的机会。”因为数学是一门逻辑严密的科学,具有高度的抽象性,所以很多学生觉得数学枯燥无味,学起来非常吃力。爱因斯坦说过“:兴趣是最好的老师。”只有在教学中设法激发学生的学习兴趣,才能最大限度地调动学习的积极性。这里的兴趣应属于情趣的范畴。教师应该努力在教学中应用相似论,巧设比喻,把抽象的数学知识具体化,枯燥的数 “Mathematics curriculum standards” emphasize: “Mathematics activities must be based on the level of cognitive development of students and existing knowledge and experience, teachers should stimulate the enthusiasm of students to provide students with the opportunity to fully engage in mathematical activities.” “ Because mathematics is a logical science, highly abstract, so many students think mathematics dull, very difficult to learn. Einstein said ”: interest is the best teacher. " Only in teaching to stimulate student interest in learning, in order to maximize the enthusiasm of learning to mobilize. Interest here should belong to the category of taste. Teachers should try their best to apply similarity theory in teaching, make metaphorical, embody abstract mathematical knowledge,