programming

from how i failed, failed, and finally succeeded at learning code by James Somers

That's the pedagological ballgame: get your student to want to find something out. All that's left after that is to make yourself available for hints and questions. "That student is taught the best who is told the least.

Kids are naturally curious. They love blank slates: a sandbox, a bag of LEGOs. Once you show them a little of what the machine can do they'll clamor for more. They'll want to know how to make that circle a little smaller or how to make that song go a little faster. They'll imagine a game in their head and then relentlessly fight to build it.
Along the way, of course, they'll start to pick up all the concepts you wanted to teach them in the first place. And those concepts will stick because they learned them not in a vacuum, but in the service of a problem they were itching to solve.