[pen and a paper]

Can anyone provide some insight on this? I would like to be able to generate a valid bitcoin address using a pen and a paper, I know this could be done in milliseconds using a computer, But then I can't see the whole operations by my own eyes, of course I will use a computer to do the hard calculations but I will be able to see every and each of the steps and record them for my study. Imagine I'm a teacher trying to explain the procedures on a white board, how can I?