In this study, students investigate whether and how much the native understory shrub pawpaw (Asimina triloba) may affect tree regeneration in a forested habitat. During one lab period in the field, they collect data on the densities of tree seedlings and saplings under varying densities of pawpaws. During a second lab period in a classroom, they test whether tree densities are lower under pawpaws, and whether plots with higher densities of pawpaws have lower densities of trees. After discussing a guide to writing lab reports, students participate in a “writing workshop” in which they read examples of student lab reports and discuss how to improve them. Students then report their findings in a brief lab report. This project introduces students to key components of ecological research including transect and plot sampling, paired designs, statistical analysis and scientific writing.