TITLE: Math without pencil and paper
QUESTION [294 upvotes]: For someone who is physically unable to use a pencil and paper, what would be the best way to do math?
In my case, I have only a little movement im my fingers. I can move a computer mouse and press the left button. Currently I do very little math and when I do I use MS Office but this is a very slow way of doing it and will break my thinking process.
EDIT:
Thank you for the answers. I have a lot to try. I won't accept an answer since it's dependent on the disability but thank you all.

REPLY [3 votes]: I am a graduate student in a mathematical field with a chronic injury to my hands. I have recently been using Mathfly to dictate LaTeX math by voice. Please see mathfly.org for instructions on how to install and use it as well as demonstration videos and the chat room. It is free and open source, and well documented.
Unlike mathtalk, mathfly allows continuous command recognition (ccr) which means that you don't have to pause between commands. Mathfly is also completely customizable.