ways to use interactive whiteboards in the classroom. The realization of autonomous learning. Multimedia technology not only has simulation, but also vivid and intuitive display of teaching content, and it is interactive, free from the traditional, passive injection teaching method. This teaching mode can provide learners with graphic audio and video, rich and colorful interactive human-machine interface, which is easy to stimulate students' interest in learning and create favorable conditions for their exploration and discovery of knowledge.. 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.