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数学学习离不开数与形,不少学生在解题时却将二者割裂开来.为了培养学生的数形结合能力,本文将数学题进行分类,帮助学生迅速作出判断,提高解题效率.数学题大致可分为如下五类:(1)用数或形做都很简单;(2)用数形做都困难;(3)用数做简单;(4)用形做简单;(5)必须数形结合才能解决.对于前两类,大家都能想到,而对于后面三类,如果该用形时用数,该用数时用形,该数形结合时却没想到结合,就会事倍功半,陷于被动.如果平时能掌握这
Mathematical learning is inseparable from the number and shape, many students in the problem-solving but the two will be split apart.In order to cultivate students’ ability to form with numbers, this article will be classified mathematical problems, to help students make judgments quickly to improve the efficiency of problem-solving Math questions can be broadly divided into the following five categories: (1) it is easy to do with numbers or shapes; (2) it is difficult to do with numbers; (3) to be simple with numbers; (4) to be simple with shapes; 5) must be combined with the number of forms can be solved.For the first two categories, we can think of, and for the latter three categories, if the use of shape when the number of the use of time-shaped, the number of combinations did not think of combination, Will be more effective, passive, if you can usually grasp this