.whiteboard custom size.Second, the use of interactive whiteboard technology can instantly and flexibly introduce multiple types of digital information resources, and can flexibly edit, organize, display and control multimedia materials, which makes the presentation of digital resources more flexible and solves the past multimedia. In the projection system environment, the use of courseware and slideshow teaching materials structure is highly solidified. The interactive whiteboard enables flexible integration of a wide variety of educational resources. You can call the computer and network original resources (including various computer and network software courseware, play various multimedia CDs, video and audio materials, etc.) in the computer work interface of the interactive whiteboard, and you can directly call the interactive whiteboard. A kind of resource library mainly includes a flipchart resource library, an annotation library, a hyperlink library, an animation library, and the like.