There was murder in an office, and you, Detective So-and-so, must deduce who killed your victim, approximately when your victim was killed, what the murder weapon was, and why he or she was murdered. All the clues will be found in the trash can next to the victim’s desk, but you have to sort through everything to figure it out.
I told the kids to make a list of everything they might find in the trash can, including mundane items. They cannot list blatant items (like a gun), but rather, be creative in how the murder happened. It is up to the rest of us in the classroom to figure out “who done it.”