3D printing is great because it's something physical and useful. Other physical alternative is, quite obviously, Arduino. I have no experience teaching kids bu

3D printing is great because it's something physical and useful. Other physical alternative is, quite obviously, Arduino. I have no experience teaching kids but I think that it would be a really solid option too given they implement something useful (to some extent), and that's a really important point. I mean a blinking LED is cool for the first time but then you just forget about it. But for playing cards, or 3D printed stuff, it's something you can actually use it and you can keep improving it, driving more learning. Given the adoption of Arduino, I'd be surprised if no one has developed a solid course for kids yet.