digital whiteboard for office collaboration. Exercise is the activity of transforming knowledge into ability and developing intelligence. The electronic whiteboard can be used for different forms of practice, such as games, drawing, selection, puzzles, filling, etc., as well as a variety of questions and multiple questions. training. It solves the problem of single and boring exercises in traditional teaching, and the phenomenon that students are tired of practicing changes.. 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.