.whiteboard restorer.As an educational technology, electronic whiteboards serve teaching. We need to teach technical support as needed. If we can use a simple teaching tool that expresses clearly in the language or can add chalk to the blackboard, we will never need to use complex technology. In a class, only part of the content needs electronic whiteboard assisted teaching. When we complete the task and break through the difficulties, we can return to the regular teaching methods. I have seen many teachers use projections and screens but don't use electronic whiteboards. I want to emphasize that on the teaching platform with electronic whiteboards, if computers and projectors have been activated, other third-party teaching software is used to assist teaching. So why don't we start the whiteboard at the same time? Because the tools, resources, and interactive functions of the electronic whiteboard can make our information technology applications even more powerful.