I still end Era 4 with the Black plague. This was the first year I did the contagion activity. I did very little prep. Borrowed some desk of cards, just put letter on scratch paper, P.,M.,N, and added the graphic to my slides. Students were very engaged. Seemed to react well to the activity as an introduction to the Black Plague. I've had a student student suggesting new rules. i would say it was a big success and encourage people to use it. How are other people using/finding this activity?