If the goal is to move beyond the shape of the graph to consider the dynamic aspects of functions, students need to explore dynamic representations of functions. To address this, the authors combined the use of a dynamic representation of function with the instructional routine, Which One Doesn't Belong? [WODB]. In this article, they briefly introduce the WODB routine and the dynamic representation of function that they use, dynagraphs (for more information on dynagraphs, see Edwards and Nickell 2014). Then, they share their dynamic WODB task along with examples of ways in which their students engaged with it. The intent is for readers to consider how dynamic representations situated within WODB can extend students' exploration and recognition of the dynamic characteristics of functions.