what whiteboard marker.Undoubtedly, classroom informationization is the breakthrough of information technology and subject curriculum integration, and it is also the core of primary and secondary education informationization. But no matter how advanced the technology, it is necessary to achieve the right combination with the teaching content in order to play the role of information technology, and truly play the role of finishing touch. In some classrooms, the whiteboard technology and teaching needs to be unsuitable. For example, it is a kind of teaching routine to put a video for the active atmosphere and mobilize students' interest before class, but some video materials have little effect on causing problem awareness. Or it is not closely related to the core knowledge of this lesson. Improper display will give people a feeling of being overwhelmed. Therefore, in preparing lessons, teachers should carefully analyze the teaching materials, find the entry points of teaching content and teaching materials, and make the use of technology more targeted.