Question: I am currently creating a math's quiz for kids in python tkinter. In this quiz i have 3 different 'pages' as per say. A start page, a quiz page and a score page for when the quiz is finished. In my start page, i have three different difficulties of the quiz the user can choose from. How do i essentially clear elements of the window from the start page such as my label's and button's once that button "EASY" or "HARD" is clicked so i can start the quiz?

Answer: 
You could use a tabbed view and switch the tabs according to the difficulty selected (see tkinter notebooks <https://docs.python.org/3.1/library/tkinter.ttk.html#notebook>)
Or you could have the quiz in their selected difficulty in their own windows.
I would suggest you to use different frames that can be pushed on top of each other. Have a look at this answer [Switch between two frames in tkinter](https://stackoverflow.com/questions/7546050/switch-between-two-frames-in-tkinter).