i always start with a short warm up (walking, hip circles, move arms,….) for about 5min and then stretch every important part of the body just a little (legs, arms/ shoulders, neck, hips, ankles) then the main part follows (tricks and spins)
i try to mix it a bit. to get more warm i start with spins, then continue with tricks and when they get too tired get back to spins.
at the and i sometimes add some strenght training.
and if your students get too tired (for beginners a hour can be really long) i do some stretching or floorwork in the middle.
always start with some moves to get used to the pole like walking and turns on the ground. i think this is really important before you start with spins and tricks as some may never have used a pole before.
i have a choreography on my youtube account i made for a girl who doesn´t pole that long. if you don´t want to make a own one, you could just cut out the invert. beside one invert it only includes spins and beginner tricks (for 6 weeks you also may have to use just half of it)
but i would definitly teach them a choerography, my students always love them and it´s important to know how you can put tricks and spins together.
hope this helped you a bit!