First, let children memorize all mathematical formulas, such as distance = time * speed. Then, to improve children's reading ability, it is necessary to fully understand the meaning of the topic, so that they can distinguish which numbers correspond to which formula. Finally, improve children's ability to apply formulas. This should be done on the premise of fully memorizing the formula and fully understanding the topic. If the text is not easy to understand, you can use it to assist line understanding. For example, the area of a parallelogram is

The simplest and most convenient way is to ask a good tutor to teach children how to learn.