Line-lined notebooks generally refer to single-line notebooks. Single-line books are bound into volumes with lined paper and can be used to record matters while working and studying.
The squares are smaller and the number of cells is larger. The common version has 20 squares x 20 fine squares, which are used for mathematical exercises. There is a space on the left to write the question number. Used to practice calligraphy. Some are printed with nine-square grid, and some are used to write large characters and small characters respectively.
Extended information:
Exercise books are notebooks and homework books for middle school and primary school students. The cover printed by the school by subject and level is usually accompanied by the school badge and school name, and They are called school books. Sometimes, for the sake of distinction, exercise books sold publicly in stores are called street books. There are fields on the cover of the exercise book for filling in information such as name, class, class or student number, subject, teacher name, etc.
There is a form on the back of some covers to record the date, content, points, etc. of each exercise. Parents may need to sign the form to know their children's academic performance. A customary practice tool.