Xinhua Bookstore has it. According to Xinhua Bookstore's official website inquiry store, there is the second volume of the sixth grade mathematics classroom notes published by Su Jiao Edition, which is cheap and rich in content, and is very suitable for primary and secondary school students to read and learn. Class notes are designed to practice class synchronization. Learning ability can be improved by taking notes in class. Xinhua Bookstore was established in 1937. 1937 On April 24th, Xinhua Bookstore, the predecessor of Xinhua Bookstore, was established in a grotto in Wanfo Cave, Qingliangshan, Yan 'an, and was renamed Yan 'an Xinhua Bookstore in June of the same year.