In addition to these websites, you can also go to Sina Aiwen Search, which contains many electronic resources and scanned versions of books. If you want to buy it, you can also go to Amazon, where you can buy Kindle e-books, provided that you have kindle, which is a product that can read e-books and can be bought on Amazon.
Teaching AIDS refer to all kinds of publications such as study counseling and examination counseling which are matched with teaching materials and used by students, including synchronous practice publications of teaching materials, homework publications in winter and summer vacations, exercises in primary and secondary schools and papers publications.
In addition, there are other publications for primary and secondary school students' study and examination guidance recognized by the administrative department of press and publication at or above the provincial level. Its product forms include books, newspapers, periodicals, audio-visual products, electronic publications and so on.
Synchronous exercise refers to books that are synchronized with the course content of the textbook, assisting and guiding the study of the textbook. The tutorial book for synchronous practice not only has exercises, but also explains and infers the contents of the textbook in detail.
Reviewing counseling materials refers to students' comprehensive exercises and tests on certain learning stages. This auxiliary teaching material is usually used in the last learning stage, mainly to summarize and count the knowledge learned in this whole learning stage and help students recall these knowledge points again.