... interestingNoting : support OFFICE,WPS software.Writing :supply three type of pens: normal pen, smart pen and broad penWhiteboard ... you can choose three kinds of screen shadow:: centre, left--right ,up and downTeaching resource :Abundant teaching resources are embedded ... be recognized into text automaticallyTool: Ruler, Set Square(two type), Protractor ,Compass, Clock, Searching Light, Screen Shade( ...