I am a tutor and schools over for the 5th grader I work with. If you had 3 months to teach a student whatever science/math/engineering what would it be?

It's been asked many times before, but the answer is always short science experiments. They're fun, they get a kid into science, but my student is already into science. I want ideas for a good subject I could go into depth with that'd teach him something meaningful. I really like the kid, and would like to help contribute some deep understanding!

My ideas thus far are

• Engineering type of project. It'd be fun to work, it'd be physical and real, which seems to most involve kids. And god does this kid love guns, so maybe some sort of cannon? It'd teach him about basic newtonian physics and pressure.

• Programming. It's not quite science, but I've recently fell in love with it. I'd start with Logo/python, and hopefully get him a basic understanding. I'm kind of excited about the prospect. I approached him with it, and he said "Oh! So I could hack computers?" Kinda hilarious. I definitely hope to cover basic computer workings with him.

Background:

Me: I have a general science degree, so am qualified for 'general science' sort of things. I know basic physics, chemistry, math, and biology. More of the first three, I took the first two years of em in college.

The kid: He's not a savant, but science and math are his favorite subjects. He also likes FPS's, and airsoft. And guns, my gosh, guns.