Hi Bobby:
Great example of doing something a little different to promote thought and adaptability. I think, as a back up plan, this might be better done when say, half you class is absent for some reason. Then, it'd make sewnse to modify things because you want to make the best of a less than wonderful situation. That's when a back-up plan becomes invaluable. But this change up should encourage some discussion and stretch from your students.
Regards, Barry
