whiteboard vendors. The built-in resource library of the whiteboard software provides rich teaching resources and materials for each subject. Its open framework also provides strong support for teachers' self-development or school-based development resources. Before class, teachers can select the appropriate material or resource in the built-in resource library for the teaching objectives and content. For general materials, teachers should further consider the way of processing and utilization; for resources that are directly available, teachers should design their presentation in combination with the powerful rendering function of the whiteboard. For example, in the high school chemistry "Principles and Applications of Primary Batteries", part of the teacher's practice of class is designed in such a way that before the class, the teacher decomposes the collected galvanic connection diagram into basic components in the preparation environment of the whiteboard. Go to the photo gallery. After the students have studied the conditions for the formation of the primary battery, the individual components are arbitrarily combined to form different devices, so that the students can judge whether the primary battery can be formed according to the knowledge learned. In the actual teaching process, it shows a strong randomness and pertinence, which can be based on students.. 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.