The linear arrangement of teaching material content is to arrange the teaching material content of a subject in an interlocking, linear and non-repetitive way. In other words, in the arrangement of teaching materials, what has been said before will not be repeated later.

The arrangement of teaching materials determines the arrangement order of the teaching content of a certain subject in one grade or in several grades. There are generally four ways to arrange teaching materials, and the other three are:

Second, spiral arrangement. It aims at learners' acceptance, which makes some basic principles of a textbook appear repeatedly, and gradually expands and spirals according to complexity, depth and difficulty.

Third, the branches are parallel. It is to divide the content into several parallel units, adopt corresponding teaching methods for these parallel units, carry out teaching activities one by one, and finally make a summary.

Fourth, the comprehensive type is the synthesis of the above methods.