metal whiteboard. Summarize the practical experience of several schools using interactive whiteboards and the characteristics of interactive whiteboards. From the low-to-high level of application strategy, the author believes that it can be divided into three levels: (equivalent to existing traditions) Classroom teaching function), the application of interactive whiteboard unique teaching function) - Full play of interactive whiteboard interactive function These three levels represent the development stages of the whiteboard application process on the one hand, and the practical application of the whiteboard on the other hand, It can be the integration of all three levels. Usually, the relationship between the three levels is that the previous level can exist from the later level. The existence of the latter level is based on the previous level. Because the technical barriers of interactive whiteboards are very small, sometimes good teaching strategies can avoid the technical obstacles and can reach the high level of interactive whiteboard applications. This also reflects the interactive whiteboard as a special comprehensive technology that is easy to learn and use.. 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.