smartboard has limited functionality.Mathematics is a discipline with strong logical thinking, especially the geometric part, which requires a strong abstract thinking imagination. In the past teaching, it was generally only based on the teacher's lecture. The chances of students' hands-on operation were relatively small. There was such a situation in the classroom: the teacher explained hard on the above, the students looked around and the attention was completely absent from the teacher. On the body, it greatly affects classroom efficiency. However, the interactive whiteboard solves this problem very well. Teachers can use the powerful functions of the electronic whiteboard to directly display the content that the students need to imagine in the classroom, saving too many language descriptions and making the teaching content. Visualization, students can directly feel the production process of knowledge. This will solve the content that teachers can't explain clearly and students can't understand.