1. First, select the appropriate "textbook" and "grade" in the "Setting Center";

2. "Textbook" Bian Xiao chose "Ordinary Edition";

3. "Grade" Bian Xiao chose "Grade 7";

4. After choosing the suitable teaching materials and grades, we came to the page of video teaching, and Bian Xiao chose the video explanation of "Plane Graphics and Stereographic Graphics";

5. Click "Enter" on the right side of the page to watch the teaching video online, and "Download" on the left side of the page;

6. Click the "Download" button to cache the video offline, and you can watch the teaching video anytime and anywhere without wifi.