A couple of weeks back, I attended the IOLS training (Introduction to Outdoor Leadership Skills) training as a BSA adult leader. What I liked is the EDGE method of teaching Outdoor Ethics during a campout with the boy scouts.
EDGE stands for: Explain, Demonstrate, Guide and Enable
Explain what you want to teach - a skill, a concept etc.. use questions to gauge understanding
Demonstrate how to do it - use actual materials
Let the scout try it out, Guide them as they do it themselves. Have patience as this step usually takes time! Give feedback as to the effectiveness of their actions and any improvement that is needed.
Then Enable the scout to do it themselves without Intervention and provide opportunities for the Scout to demonstrate the outdoor ethics and skills learnt at a campout or outing.
We were taught different skills: Knots and Lashings, different styles of cooking, tools soldiers use/used, identifying poisonous plants, looking out for nature, what to take when camping out, how to make a fire and basics of first aid.
Do read this article from Scouting Magazine if you have the time and patience:
https://scoutingmagazine.org/2016/12/use-edge-method-outdoors/