small hanging whiteboard. Technology, we mainly focus on classroom teaching of interactive whiteboards. As the experiment continues, we will further explore the teaching design in computer multimedia projection classrooms, computer network classrooms, laboratories, and other existing information technology environments.. 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.