I have taught members of the British army both my own lads and others.
With lessons it is best to have 40 minute quick lessons or 2 hour blocks.
For example a fire lighting demonstration showing two or three easy techniques will easily take up 40 minutes with a explanation, then demonstration, then get the student to imitate you then let them practice. I would show ferro rod and flint and steel which are easy to get the hang of and very effective. I would not show bow drill except to an advanced group as there are better and more effective ways of lighting a fire in a survival situation (it is one of the main differences between bushcraft and survival).
For Water show them collecting methods; Tarps as a rain catch, transpiration bags, dew rags, rivers and streams (where best to collect from) Indian/gypsy well. Then go through easy water purification methods boiling, tablets, bought filters then the improvised filters of the bottle filter and tripod layered filter. I would also go through different water containers and their uses metal and plastic and glass, bags and bladders.
Shelters: both natural and man made. I would start with man made; tarps (in various set ups such as lean to, a frame, flying Vee; tents, and if confident even a Mors super shelter. Natural with improvised man made parts of plastic sheets or bin bags. Finally full natural ones A frame, lean to and others.
Also do not forget about other shelter stuff clothing and improvising waterproof clothing from bin bags, or the use of survival bags and blankets. DO NOT FORGET building shelters takes a long time so you may want to keep some of the natural stuff for the 5 day course.
Basic navigation: map and compass, improvised techniques and natural indicators can be taught. watch method, sun and stick method, and stars etc.
Location: signalling devices United Nations blue and blaze orange being the best to been seen, shiny objects, signals fires, whistles,flares (if you can get them, do let them handle them demo only), smoke (black and white and uses and when and where) international distress signals and signs (ground to air) signal mirrors.
Food: all dependant on laws and permissions but you can demo snares, pits and dead-falls as long as you dismantle if you do not have permission to trap, easy to catch stuff and even better plant id what you have in your local area. Leave fungi out unless you are 100% confident and a mycologist
I would also simple survival kit from pocket to small packs or even vehicle stuff on the five day. Tell people what works for you in your environment but in different environments different equipment is needed.
later on you can do animals in your area and even tracking
hope that sorts you out for a bit.
Another help you need just ask.
Military manuals are a good place to start but do not rely on them other books by Lofty Wiseman, Mors Kochanski, Barry Davies, Joe O'Leary, Cody Lundin, Mike Hawke, Paul Kirtley and even Dave Canterbury to name a few but there is loads of information out there just make sure you fully understand what you are trying to teach and do not be afraid to ask or seek better advice.