Had a thought about me being in a scenario like this.
My answer on what to teach would be early industrial mechanisms. Show them the concepts of machines that paved the way towards the industrial revolution. Water wheels, gears and cogs, powered tools like saws and hammers, pumps. Then I would lead them forward towards more advanced metal working.
All of these would be pretty easy to engrave into your memory without relying on lists of facts. I already understand a lot of them just by playing video games and watching stuff like How It's Made.