C182 STUDENT AND INSTRUCTOR PLT LET THE ACFT GET SLOW WHEN PWR WAS NOT ADDED; AND LANDED TAIL FIRST. THE ACFT WAS DAMAGED.

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PROB BEGAN ON SHORT FINAL. I FLEW THE ACFT DOWN TO ABOUT 20 FT; REDUCING PWR DOWN TO IDLE. AS THE ACFT BEGAN TO SINK; I RAISED THE NOSE TO ABORT A VY PITCH ATTITUDE. THE SINK RATE STARTED TO INCREASE; SO I ADDED A LITTLE MORE AFT PRESSURE ON THE YOKE AND TOUCHED DOWN MAIN WHEELS FIRST. THE POS OF THE YOKE UPON TOUCHDOWN CAUSED THE ACFT TO STRIKE IT'S TAIL AND BECOME AIRBORNE. THE ACFT FLEW FOR HALF A SECOND AND LANDED FLAT AGAIN. DAMAGE WAS DISCOVERED UPON POSTFLT TIEDOWN PROCS. STUDENT NOR INSTRUCTOR BELIEVED LNDG WAS HARD ENOUGH TO DAMAGE ANYTHING. DAMAGE FOUND WAS MISSING TIEDOWN RING. CONTRIBUTING FACTORS WERE VERY LOW TIME IN ACFT (LESS THAN 5 HRS) AND TRANSITION OF PLT FROM L TO R SEAT (APPROX 20 HRS AGO) FOR CFI/II TRAINING. I ALSO LEARNED A NEW LNDG TECHNIQUE APPLICABLE TO C172 MODELS. MAYBE INSTRUCTOR SHOULD NOT BE SO COMPLACENT WHEN STUDENT IS TRANSITIONING TO A NEW ACFT. INSTALLATION OF A TAILSKID COULD HAVE LIMITED DAMAGE. STUDENTS (MY) VIEW OF A LNDG WAS DIFFERENT ON EACH LNDG ATTEMPT. MAYBE IF CONSISTENT PICTURES WERE DEMONSTRATED AND IF BOTH STUDENT AND INSTRUCTOR HAD MORE TIME IN TYPE; WE WOULD HAVE REALIZED OUR MISTAKES EARLIER.