We thank PPCC faculty and staff for their participation in this research: Robert Henderson, Lisa Hollis-Brown, Melissa Lema, Anne Montgomery, David Oswandel, Stephanie Pauley, and Jennifer Swartz. In addition, we thank Robert Wheeler for his technical assistance with lab 1 methods, Tara Woodard and Matthew Peetz for participating as laboratory instructors at the 4-yr institution (UCCS), Miguel Ferreira for the rad22-GFP strain used in this module, and the LSE anonymous reviewers for their thoughtful suggestions. This work was funded by the National Science Foundation (grant no. 1140120). 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.