刚升入初中的广大农村牧区的小学毕业生,在约45天的暑假里,很少复习功课,小学阶段学过的0和正数的运算,自然会遗忘,计算能力下降,学生学习有理数的运算时,往往顾此失彼,不是写错符号,就是算错绝对值,这是因为小学数学与初中数学在衔接方面出现了问题.为了解决这一难题,我们从第一节数学课 Primary school graduates who have just graduated from junior high schools in rural areas are rarely graduating from homework during the summer holidays of about 45 days. The calculations of zeros and positive numbers learned in elementary school will naturally be forgotten, the computing power will be reduced, and students will be able to learn rational numbers. At the same time, we tend to miss out on each other, not write the wrong symbol, or calculate the absolute value. This is because primary and secondary mathematics have problems in the convergence. In order to solve this problem, we have learned from the first section of the mathematics class.