Eids beat me to it. Couldn’t agree more that map reading, compass skills, and making it fun with orienteering is a great start. Heck that could be an entire semester.
I would add that the single best skill you can teach with it, is what I call “observation” don’t look- see- take time to study what you see. Do not have them naming plants and animals and birds, you learn nothing from that, but if you observe over the seasons you learn a bit. The naming of stuff comes later for those who are smitten by the experience of just watching.
What an opportunity:D Many more ideas that I can provide PM me at firstname.lastname@example.org