... Just with your fingers, you can pick up any tools from the menu(the functional icons) to write, ... ruler, protractor, set square, searchlight and other tools, and to page up/down, drag object, clone object, etc. ... move, rotate, zoom in/out object and shift page, etc. with your finger instead of e-pen ... and earphone can be built in;The operating page can be stretched;Abundant teaching resources -- the ...