Taking a picture of your computer screen is quite easy. Every keyboard has a print-screen button (usually labeled prt scr) located above and to the right of the backspace button.
When the screen you wish to copy is showing, simply push the prt scr button once. (Nothing happens? Don't worry, it isn't supposed to.) Your computer has just copied the picture and placed it in the clipboard.
Now open Microsoft Word and paste the copied picture; paste the picture by going to EDIT on the menu bar and selecting PASTE, or by clicking the PASTE button on the toolbar, or by keying "ctrl V", or by right-clicking your mouse and selecting PASTE. However you choose to do it, simply paste the picture to the document.
From here you can save the Microsoft Word page and submit your work under Assignments.