The purpose of this performance task is to engage students in looking for and making use of structure in order to determine the number of stink bugs on a given picture. Students review invasive species and the work of scientists to monitor such creatures, students are provided the problem in the context of supporting invasive species specialists. Working as individuals and then as pairs, students determine the total amount using previous knowledge of patterns such as counting, grouping, or fact families. The task concludes by having student-demonstrated strategies modeled and labeled as a whole group creating strategy posters.