I don't know what effect my suggestion will have on you. 1) If you don't understand anything in class, you can use Baidu video to search the content of that section. There is video teaching on the internet. 2) If there is no problem, you can go to SOSO and find someone to help you solve it. 3) If you find a problem, directly search the specific website of your grade math test questions. There are the following primary and secondary mathematical networks.

. com/

China Mathematics Online

/

China Olympic Mathematics Network

/

The Window of Mathematics in Guangzhou Middle School

/index.html

High school mathematics network

/

Mathematical China

/index.html

Maisi Mathematical Network

/is/navigation/mathematics/index.htm hope to be adopted!