smartboard 20 point calibration.Tao Xingzhi said that "education must be scientific. There is no place for this kind of education to be copied. We must use scientific methods to continue to study it according to objective conditions. Moreover, the content of such education must also Incorporate and focus on the natural sciences and social sciences, otherwise it is not allowed to move forward." Therefore, education must keep pace with the times and be innovative. The interactive whiteboard is a new high-end digital device for teaching, conference and training demonstrations. As a representative of emerging educational technology, interactive whiteboard combines the advantages of modern educational technology and traditional educational technology. A revolutionary breakthrough in the long-standing blackboard + chalk + eraser "Trinity" classroom teaching environment, its emergence has also had a tremendous impact on education reform and development, adding a lot of beautiful scenery to our classroom teaching. Comply with the trend of information development, and greatly promote the process of school informationization.