When I was growing up, we had discovery channel. That sparked my intrinsic curiousity. My daughter has that intrinsic motivation as well, but only for k-pop now. She likes youtube videos and she likes when I tell her about science stuff. Maybe I can combine that by recommending her some good youtube channels.
It’s not flashy but there’s plenty of great Richard Feynman lectures on yt. No one better at communicating science and math imo.
You’re going to park a 12 year old in front of a Feynman lecture? Good luck with retention of the material.