This module contains exercises focused on the use and interpretation of density independent and density dependent population growth models. Students build logistic and exponential growth models in Microsoft Excel (either using a template or built from scratch). The module is based on an actual ecological phenomenon, the black rat population explosion that occurs every 48-50 years following the flowering of the bamboo Melocanna baccifera. As part of this module, students will gather life history information from the PBS Nova Documentary ‘Rat Attack’ describing this phenomenon for use in the population models.