This quick and visual demonstration uses water and measuring cups to model how population increases when the birth rate exceeds the death rate. Students observe the flow of “births” and “deaths” in real time, helping them grasp key concepts in population dynamics, growth rates, and demographic change. Perfect for introducing population science or supporting life science and data literacy standards.

Use this video, alongside our Stork and the Grim Reaper lesson plan, for an impactful new way to teach about birth rates, death rates, and population change. For more details on this lesson, click the green button below.