interactive board activities. Pupils of experience, practice, participation and the creation of stable interest pupils focus on training , follow the teaching of the language law implementation "classroom activities, teaching activities of the task, the task of the main activities '. 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.