In this SET, the teacher presents a common misconception in the discipline and then takes a quick, informal poll asking students to agree or disagree with the statement. The teacher then tells students that the statement is untrue and assigns students a task that requires them to prove why it is untrue.

This activity challenges students by creating cognitive dissonance, requiring them to subject their belief to critical analysis and use the knowledge and understanding they are acquiring in the course to gather the appropriate evidence to demonstrate why a commonly held belief is untrue.