One thing I emphasize with new students is to never ever let the nose come up to the point where they cannot see the runway touchdown point. If the nose remains down below the horizon the airplane cannot stall (unless the airplane has a very high bank angle, not likely while on final).
I also tell them that if the stall warning comes on during approach they are too slow. If it does not come on during the flare to land they are too fast.
Don't need no steenkin airspeed! (joke)