Critical Mass

Subgroup Size

Entire group


35 minutes

External Cost


Lesson Plan


Activity created by Annette Benson and Brittany Biesiada, CILMAR, based on the following chapter:


Steele, C.M. (2010). The strength of stereotype threat: The role of cues. In Whistling Vivaldi: How stereotypes affect us and what we do (pp. 134-151). W. W. Norton & Company.

As a result of this activity, participants will be able to: 1. Define the concept of "critical mass." 2. Analyze photos for critical mass, inclusion/exclusion, and stereotypes.