Whatever you try, make sure it does something that he is actually interested in. I remember being introduced to instructions that "did calculations" I had no r

Whatever you try, make sure it does something that he is actually interested in. I remember being introduced to instructions that "did calculations" I had no real use for. Quite abstract, and without much underlying explanation. (This was also a time when many machines did not "do graphics".) "What's the point?!" Make sure you provide a sufficient answer. Not in words, but in engagement: His, genuine and unforced, and yours, helping him. Just the other day, the NYT had an article on MIT's Scratch. I'd suggest having a look at it, whether via that article as an introduction or all that search will turn up -- stuff describing kids' engagement with the platform, so that you can decide whether it will work for you. P.S. Others are mentioning Logo, which I'd forgotten. And maybe 7 is more the age for Logo than Scratch (9 or 10?).