smart board not working.Electronic whiteboard, also known as electronic interactive whiteboard, is a new high-tech e-learning system. It is integrated by a hardware electronic proximity whiteboard and a software whiteboard operating system. The electronic whiteboard integrates various functions such as a traditional blackboard, a computer, and a projector, and is convenient, flexible, and effective. In classroom teaching, interaction is the soul of multimedia interactive whiteboards used in classroom teaching. The multimedia interactive whiteboard is not only for teachers, but also for students . The electronic whiteboard technology provides efficient and convenient technical support for classroom teacher-student interaction and student interaction, and lays a technical foundation for the establishment of classroom learning centered on student learning . In the classroom teaching, teachers can use the electronic whiteboard to more effectively complete the whole process of teaching under the new curriculum reform concept of presentation, display, communication, interaction and cooperation, which can better expand the teaching resources, optimize the teaching process, and stimulate students' interest in learning. Improve the efficiency of classroom teaching.