portable whiteboard. Based on the characteristics of information education, combined with the characteristics of modern teaching and traditional teaching, the role of whiteboard in teaching is fully utilized, and informationization is truly brought into the ordinary classroom and daily teaching activities. Because the electronic whiteboard has no dust pollution, no water demand, outstanding power saving performance, safety and stability, it has greatly improved the working conditions of teachers, improved teaching efficiency, and further promoted the digitalization process of classroom teaching.. 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.