-Offers an interdisciplinary, four-lesson module using project- and problem-based learning to help students devise a model for counting populations of a given species on Earth and develop a formal presentation of their models for consideration

-Written and developed for middle school teachers, the book offers lesson plans guiding students to examine species' ecosystems, explore global populations with an economic and geographical lens, take on the role of an urban planner considering the consequences of population density and overpopulation, and share relevant literature

-Anchored in the Next Generation Science Standards, the Common Core State Standards, and the Framework for 21st Century Learning