Consider testing with a talent search like JHU-CTY to get a better idea of ability if you don't gave a clue and want to know. Provide access to learning resources and opportunities without pushing. There are plenty of free and low-key options at this age such as taking him to the library frequently and helping him select books and taking advantage of free online programs provided by your school district and local libraries. When he gets a bit older, there will be competition opportunities if he finds them enjoyable. Otherwise, everything Dude said.
