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: 
If you put all your widgets in one frame, inside the window, like this:

```
root=Tk()
main=Frame(root)
main.pack()
widget=Button(main, text='whatever', command=dosomething)
widget.pack()
etc.

```

Then you can clear the screen like this:

```
main.destroy()
main=Frame(root)

```

Or in a button:

```
def clear():
    global main, root
    main.destroy()
    main=Frame(root)
    main.pack()
clearbtn=Button(main, text='clear', command=clear)
clearbtn.pack()

```

To clear the screen.
You can also just create a new window the same way as you created `root`(not recommended) or create a `toplevel` instance, which is better for creating multiple but essentially the same.
You can also use `grid_forget()`:

```
w=Label(root, text='whatever')
w.grid(options)
w.grid_forget()

```

Will create w, but the remove it from the screen, ready to be put back on with the same options.
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).