This morning a colleague pointed me to a web site where you can turn your photos into jigsaw puzzles: http://www.jigsawplanet.com
I used one of the pictures I took in the Seniors class yesterday to try it out.
Or click on the picture below to go to the Jigsaw website and do the puzzle there.
On my computer, it took a minute to load the puzzle, and I found I had to click slightly to the side of each piece to "pick it up" and move it. (Hint - you don't need to rotate the pieces to do the puzzle.
This ought to be fun on an interactive white board!