My 7-year-old son likes computer programming and I suspect has a lot of innate aptitude for it. We have worked out a system that for every X minutes of learning he does with me he gets X minutes of computer gaming time. What kind of learning exercises could help him be a better programmer when he becomes an adult? Should I focus on him doing lots of coding or, for example, would he be better served by learning additional math?

For those of you who are adult computer programmers (and please identify yourself as such in your response) what, if anything, could you have done at a young age that you think would have caused you to now be a better programmer?