You've got a good list there. Maybe add direction-finding without a compass (using a watch dial or sticks and shadows). Something else to consider is what not to take. When we went to Philmont (Scout Ranch in New Mexico for the non-scouts among us), before we left on our week-long trek, we had to empty the contents of our packs out on our ground sheet. The leaders helped us get rid of the things that we wouldn't need. All of us ended up taking along some things that we were told we wouldn't need (too many socks and underwear, etc) and we suffered for that decision. Having a backpack that's too heavy equals lots of complaining and discomfort no matter how short the hike. Kinds gets in the way of learning anything. Emphasize minimalism and creativity in packing, kind of like the amazingly small, yet capable PSKs some of the members have shared on this forum. Oh yeah, one more thing that really works great...reward them for something they observe (finding an animal track, identifying an edible plant, pointing out poison ivy, etc) by tossing them a ziploc of homemade GORP. It's amazing how much attention to their surroundings they pay! Have a great time!