why use document cameras in the classroom. . In the era of "Internet +", the professional development stage of teachers not only retains the characteristics of rapid change and rapidity of information technology, but also emphasizes the characteristics of integration and innovation. The boundaries of each stage are no longer clear, and innovation is the advanced stage of deepening. In the "Internet +" era, the definition of teacher professional development can not be defined after the Bo = = very obvious.. Interactive Document Camera is a completely new concept design and mobile visualizer. The touch capability on IQTouch and IQBoard, IQView E3511 Document Camera can be freely used for presentations anywhere in or out of the classroom or office.