For a beginners general class i would incorporate a physical training workout,
The primary goal of a martial arts/self-defense class is to teach the subject matter, BUT some students have different goals from their training. the ideal method would be to have the student do all their physical training on their own, but some of the students are using this time for multi purposes, including physical fitness, hobby or sport, to interact with people. with that in mind my system of class training starts with a few minutes of warm-up to raise the hart rate, warm up the muscle's etc, i try to vary the exercises from class to class. you can jump rope, run in place, do jumping jacks, shadowkickbox, or my favorite, bob says, (also known as Strength and Endurance) you start running in place, knees at lest waist high, and on my command they switch to sit ups, push ups, burpies, mountain climbers, leg lifts, jumps with knees to chest, and any other exercises that are appropriate, but just for a few minutes, this is only done as a warm up, not physical conditioning, then you stretch for a few minutes, again for safety not flexibility. then do your m.a./s.d. training while your students are still fresh, unless your training a competition team, then you try to kill them so they can train while tired. then after the training session you go to the physical w/o , again i use strength & endurance or bob says, by the way this makes a good training tool for kids, and can be used as a game, (ala Simon says). then the last thing we do in class is stretch for flexibility. this type of training is geared to beginners, as more serious/advanced students should be on a supplemental training program. one last thing, as an instructor each class must have the three E's, entertainment, if the class is not fun no matter how effective the student probably won't stay with it, the 2nd E is exercise since most people don't have the time to do martial arts, and then exercise, the third E is education, by which i mean they should walk away with real self-defense/martial arts skill, otherwise were just doing taebo. sorry about rambling on but I'm not a writer, I'm a fighter, and the only ones who don't agree are those I've fought with