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 in 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.