mini magnetic whiteboard. Boys , girls. The use of teaching materials, "English Childhood", a book , Qilu Audiovisual Press, "New Concept English". 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.