First of all, we check the electronic teaching materials on the national platform of wisdom education in primary and secondary schools, click the link of the teaching materials and open a viewing page. PDF is embedded in a small window, so it is difficult to download and read. What should we do?

Second, don't worry, go back to the table of contents page and change the last part of the website to elecEdu.

Third, enter the page like this, and then click the link of the textbook to open the PDF file. Click the Save button to download the entire PDF file.