A cooperative learning task where students look at pictures of objects supposedly found in the coat pocket of an airplane passenger. The coat was left behind on the plane, and your students need to make deductions about the coat´s owner to help the airline return the coat. A chart is included for students to indicate how certain or uncertain they are about the conclusions they reach. Students will then make an oral presentation and a poster summarizing their ideas about the identity of the mystery person. This activity is a natural jumping off point for a lesson on adverbs of probability, like definitely, positively, likely, unlikely, etc. The activity can be extended or revisited if you or your students bring in more pictures or objects for the coat pocket or for some other item found on the plane.