Huh, I haven’t looked at khan academy in years. They have a giant funding request box up now. I thought Bill Gates used to help fund khan academy. Am I remembering wrong, or did that end?
I work with 4th-9th grade girls teaching them code, and recommend this to them to work on over the summer! It's a great curriculum and does an awesome job pulling children in!
Does it require proprietary tools? Would like to use Linux and possibly Blender, but classes at school often use whatever big-tech tools they cut a backroom deal for.
Even if you aren't taking these classes, you can sign up for a free non-commercial license for Render Man. It comes with the full feature-set of the commercial version and there aren't any academic attendance requirements. While Renderman can also be installed on Linux, I can't personally vouch for feature parity with the Windows version as I haven't made the comparison myself.
Nuke also has a hobbyist license. No watermarking or end date, but there are limitations on output.
I watched the welcome vid to try working out if it's suitable for my pre-teen. The welcome vid is! Based on this, I suspect some of the content will go over their head, but I'm going to try them with it and see where we get. If it turns into a family project with me learning + teaching alongside my kid (or doing the bits they can't manage yet), that'd actually be a bonus.
I've done this course and I'd say it's a high school level course. Maybe a superstar 7th or 8th grader could do this on their own but I think that would be a stretch because there's some "advanced" math involved in the exercises. It's explained pretty well but it definitely assumes you have a basic understanding of geometry.