变式在小学数学中的重要作用已被人们认识和重视,小学数学中运用变式通常有图形的变式,题目的变式,表达方式的变式等等。解答一个数学题.如果能从某种基本解法出发,不断改变审视问题的角度。则能得到某些变式解法,从而获得一题多解。 [例] 李兵从甲地到乙地,如果每小时走4千米,那么到达乙地比预定时间晚2小时;如果每小时走6千米,那么就比预定时间早到1小时。甲乙两地 Variations in primary school mathematics has been an important role in recognition and attention, the use of primary school mathematics is usually a variant of the graphic variables, subject variations, expression variations and so on. To answer a math question, if you can start with a basic solution and constantly change the perspective of examining the question. You can get some variant solution, so as to obtain a multi-solution. [Example] Li Bing from A to B, if 4 km per hour to go to B, 2 hours later than the scheduled time; if 6 km per hour, then the scheduled time as early as 1 hour. A two places