white board 6x4 price. A preliminary definition of the board repository. In-depth analysis of the current domestic interactive whiteboard resource library and other teaching resource library application status, based on the full investigation of primary and secondary school teachers and students' demand for interactive whiteboard resources, the design principles and methods of wireless positioning interactive whiteboard resource library are studied. Based on constructivist learning theory, information demand theory and knowledge management theory, combined with modularization and humanized design concepts, the paper abstracts the ??three-piece composition?? idea of ??designing wireless positioning interactive whiteboard resource library, and strictly follows the design of software engineering. The process builds an open wireless location interactive whiteboard resource library framework.. 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.