We would like to acknowledge the study participants for their time and effort. We also express gratitude to our supportive colleagues in the Biology Education Research Group at UGA for their helpful feedback on earlier drafts of this article. We thank Stephanie Halmo for insightful feedback on later drafts of the article. We thank Matthew Lira for guidance on use of the pieces perspective. This material is based upon work supported by the National Science Foundation under grant no. DRL1350345. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.