物理习题中有很多求比值类的习题,例如:求密度之比、求速度之比等。学生们在做这类习题的时候,往往不知从哪里入手,或者说解题方法单一,以致于在求解这类题的时候花费很长的时间。我在教学的过程中,教给学生用比值法解决此类问题收到了很好的效果。用比值法求解物理题,就是把已知条件中的比值作为一个数值代入公式中进行乘除运算的一种方法。具体的方法通过下面的 There are many exercises in the physics class to find the ratio class, such as the ratio of density and the ratio of speed. When students do such exercises, they often don’t know where to start, or they have a single problem solving method, so that it takes a long time to solve such problems. In the process of teaching, I taught students to use the ratio method to solve such problems and received good results. Solving a physics problem using the ratio method is a method of multiplying and dividing the ratio of known conditions as a value into the formula. The specific method through the following