Picture books, check books and arithmetic books are one kind of exercise books, which have specific operating functions. Exercise book is a general term for picture books, plaid books and arithmetic books, so exercise book is not a category.

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China students' homework is extremely complicated. In recent years, all levels of society are calling for "reducing the burden" on homework. The rise and fall of homework makes China students miserable, and objectively deprives China students of their childhood. The bitterness and tiredness of homework are secondary, and the most painful thing is repetition.

From China's point of view, the schoolwork burden of primary and secondary school students has become a common problem in the country, and extracurricular homework is the main part of the overweight schoolwork burden. Many students also have homework after class. According to the questionnaire survey of 8622 primary school students, their parents and 1236 primary school teachers in the second quarter of Shanghai 1995, the results show that 83.9% of primary school students often do their homework after they go home.

The average time for primary school students to finish their homework is 1 hour 34 minutes, among which the average time for first-and second-grade students to go home for homework is 1 hour 26 minutes, the average time for fifth-grade students to go home for homework is 1 hour 43 minutes, and the average time for sixth-grade students to do homework is 2 hours a day. The homework of grade 789 has been more than 3 hours (not including the homework completed by students of all grades in school).