留白是中国画的艺术手法之一,它可以隐喻数学教学要给学生充足的时间和空间进行思考.数学是一门理性的学科,它需要学生理性思维的参与,这就需要教学时为学生留白,让他们在不同的时机,以不同的方式对不同的内容进行充分的思考.因此文章试着从留白的时机、留白的方式和留白的内容三个维度对留白的意义作出阐释. Blank is one of the artistic techniques of Chinese painting, which can metaphor mathematics teaching to give students plenty of time and space to think.Mathematics is a rational discipline, which requires students to participate in rational thinking, which requires teaching for students to stay So that they can think about different contents in different ways and at different times.Therefore, the article tries to make the meaning of blank from three aspects: the timing of blank, the way of blank and the content of blank. Explain.