portable visualizer document scanner. The order of the students' psychological activities during the opening, etc. , the various teaching modes can be carried out from different aspects of the logical sequence of teaching activities. Of course , the sequence of operations is only relatively stable, and it can be adjusted accordingly depending on the conditions of the teaching activities. Yan Chengli , Xia Huixian ,. IQ Touch C Pro Interactive LED Touch Screens has dual system of Android 8.0 and optional OPS Windows system with 20 point touch. IQTouch C Pro will create a collaborative and interactive atmosphere in the classroom or workplaces, where partners could work together by casting their mobile devices wirelessly. With IQShare Lite, It could share and display the laptop screen to IQTouch C Pro screen instantly.