I've had some students put together multiple Powerpoint presentations for a class, and now I need to find a way to stack them on top of each other and on a loop. I'm not too keen on PPT or Keynote, but I do know the PPTs will play on my latest copy of Keynote. Now, is there any way to stack them on top of each other and run them on a loop for the parents to see during the luncheon tomorrow? FWIW, each PPT is a collection of things they've learned and experienced through this class, so it's not really something they need to present to the parents themselves. Thanks for any info folks can offer.