my classroom is usually less scary

a few of my students have been on crutches in the last week, which means that two of my classes got moved from my usual building to the science hall.  negotiating four flights of stairs isn't easy to do when you're dealing with repaired ACLs and twisted ankles.  today's picture is of some stuff that was in  my classroom this morning.  i'm not sure what that giant saw is used for, and i'm not sure i want to know.