In the data download center, find the "point reading machine" and click on it.
Enter the bar code of the math book in the "Search" column. The bar code is the number at the bottom of the bar code pattern on the back of each book.
After clicking search, there will be related books. Find the book you want to download, and then click Download.
After the download is successful, open my computer, open the download folder), select the data just downloaded, select Copy, and paste the data into the point reader. When you want to do some reading in the future, just turn on the point-reading machine and click "Select Book" to find the downloaded teaching materials, so you can use the teaching materials on the point-reading machine.