whiteboard wholesale. The direct communication between teachers and students in the classroom, the teacher changed from the leader of the classroom to the computer user, the exchange of creativity and teaching experience of the teacher could not be discussed. Many excellent coursewares are oriented to specific objects. According to the needs of the textbooks, the whole set is coherently produced. Although a relatively complete ladder-shaped knowledge system is formed, due to different user-oriented groups and different teaching requirements, integration is integrated. Courseware is not easy to reorganize and reuse more teachers in combination with their own teaching, and the popularization of excellent courseware is limited.. The IQAio GR519 is an upgraded lightweight version based on the original IQAio GR511. The original dual-cavity structure was changed to a bottom-edge structure, so that the minimalist design accommodates modern classrooms and conference rooms. With one IQProjector V2 and one IQView E3821, you can achieve flexible and intelligent classroom.