digital patient room whiteboard display. Of course, everything has two sides. The use of whiteboards in classroom teaching also has its misunderstandings and problems. First, during the whiteboard-assisted teaching process, the teaching pause caused by equipment failure occurs, and most teachers often perform in a hurry, which is not conducive to teaching. Therefore, the information technology skills training of teachers should be able to keep up with the development of the times, not only training media software applications, but also training the application of corresponding hardware devices. Second, teaching is complicated. Many teachers did not use the whiteboard as a blackboard . Some classroom teachers even switched screens from beginning to end. They completely lost the proper use of traditional blackboards and played down the integration of other teaching methods. Some teachers just blindly Complicating the whiteboard, making students pay attention to the whiteboard for too long, and easily causing visual fatigue, so that students lose interest in the whiteboard; some teachers do not use the "resource library", lack of excavation of the whiteboard function, but Spend a lot of time to do courseware, input the context into the whiteboard in advance, and be busy with the courseware in the classroom, so that the whiteboard becomes the display stand of the courseware, and the utility of the whiteboard cannot be fully utilized; in some classrooms, there is a lack of whiteboards and other The combination of software. For example, in the mathematical and physics teaching, the abstract, incomprehensible scientific experiments and the use of the process of using Flash animation, geometric drawing board, etc. are better, both vivid and make the abstract concept easy to accept, but some teachers are just Mechanically using a static picture to demonstrate, thus weakening the classroom effect. Third, ignore the autonomy of students. Many teachers rely entirely on whiteboards in the use of whiteboards, focusing only on the transformation and display of whiteboard content, while ignoring the classroom teaching experience and skills accumulated over the years, ignoring effective inspiration and cultivating students' problem awareness, ignoring students. The ability to accept and the interaction between teachers and students, whether the context is suitable or not, completely copy, or excessively load the amount of information, ignoring the autonomy and participation of the students, the teacher is a word, the students helplessly listen, lack of students in the classroom The embodiment of the subject status. How to make the whiteboard play more effective in the classroom teaching, it really reflects the students' cooperative inquiry and independent experience, and it still needs our teachers to explore and summarize.. 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.