I would teach them the Arabic numbering system and as much of calculus as possible. If they understood that very quickly I would next try to teach them some of the foundations of real analysis. Realistically I don't think I could teach much more than that. Long term this would give them the tools to make a lot of other advances.
Not that this is necessarily the most important thing to share, but it's something I understood well enough that I could explain very clearly and yet still teach a lot of useful knowledge.
Also printing would be incredibly valuable, but I'm not sure I understand it well enough to teach it.
Not that this is necessarily the most important thing to share, but it's something I understood well enough that I could explain very clearly and yet still teach a lot of useful knowledge.
Also printing would be incredibly valuable, but I'm not sure I understand it well enough to teach it.