First of all, I think you'd better understand the concepts of several chapters in middle school mathematics (such as inequalities, trigonometric functions, permutations and combinations in high school algebra, etc.). ). At this time, you don't need to study deeply, just figure out a rough idea.

Secondly, combined with your current major, find out which chapters are related to your most commonly used mathematics knowledge.

Third, concentrate on storming this chapter (or chapters).

In the process of paying attention to the storm, you can check the relevant information online, or go to the local second-hand bookstore to find out if you can buy old textbooks. These things are very helpful to improve your learning efficiency!

Finally, I'll give you a suggestion: If you can find someone with good ability (performance) in this field (middle school mathematics) to communicate with each other or discuss some things, then your efficiency will be twice as effective! ~ hehe! ~O(∩_∩)O~