In math class, you can do your homework well if you are in a good mood. If you are in a bad mood, you can try to study other subjects that make you feel good.

In fact, when you step into the society, you will find that the sufferings you suffered in your student days are all flesh and blood, and they will eventually come from the fact that once you climb to the top of the mountain, one mountain will see that other mountains are dwarfed under the sky. ..

Teenagers only know how to play, but don't know how to study hard. When they are old, they regret why they didn't know how to study hard when they were young. So explore and learn more while you are young.