Writing maths is pretty much impossible to do at any sort of speed on a computer. Writing by hand will stay if just for that.
Though it would be quite funny if in the future, the only people who write English by hand regularly are scientists and engineers![]()
You can do it using Latex, but it takes a while to get used to.
In fact nearly all maths papers are done in Latex now, but I really can't envisage teaching 5 year olds to use latex.

I do Latex when I want something to look posh, but doing the actual mathematics on it would be a nightmare. Do you honestly use it when trying to prove something or solve an equation?
I do Latex when I want something to look posh, but doing the actual mathematics on it would be a nightmare. Do you honestly use it when trying to prove something or solve an equation?