In Find the Exception, students will think critically about counterintuitive logic and put sound arguments above opinions. The activity can start with a preparation section where teachers explain counterintuitivity and fill out the Pre-Worksheet where students think of scenarios where they thought in different ways. Part 2 has teachers give students categorical statements that seem true; the goal is to find counterexamples to the sound statements and present them to the class.
Counterexamples can be creative but must be logical; higher levels of play can be stricter on repetitive arguments. The activity can become a competition where the class votes on the best argument.