small interactive whiteboard. These teaching modes are of great guiding significance for the reform of English teaching in primary and secondary schools under the network environment. But the current domestic teacher-student ratio, educational information as well as consider the actual situation of physical and mental condition self-control, information technology, operational capabilities and other primary school students , the whole class teaching teachers to use technology and media research more meaningful collective teaching in particular, Primary school low. 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.