1. Buy from local education publishing house or bookstore. Educational publishing houses in different regions may publish different versions of teaching AIDS. You can go to the local education publishing house or bookstore for consultation and purchase.

2. Buy on the e-commerce platform. There are many educational books for sale on e-commerce platforms such as Taobao and JD.COM. You can search the relevant review materials at the end of primary school on these platforms, and choose shops with good reputation and high evaluation to buy.

3. Download or purchase the electronic version online. Some educational websites or applications provide electronic download or online purchase services for review materials at the end of primary school. You can find related websites or applications through search engines.