1. Open the settings.
2. Click "More Connections".
3. Click "Mobile Phone Projection".
4. Open the Wireless Projection Screen.
5. Click on the TV to be projected.
6. Open the browser.
7. Search for "Public Service Platform of Basic Education Resources in Henan Province".
8. Choose the entrance and enter through Channel 3.
9. Select the course to watch, and then click the "Play Course" button to watch it on TV.
In the development of human history and social life, mathematics also plays an irreplaceable role, and it is also an indispens