Here you will find resources to help educators and their students measure and understand how volume, temperature, slope, and channelization affect the flow of fluid, apply an understanding of factors that control lava flows, pyroclastic flows and lahars (mudflows), apply understanding of topographic maps to predict lahar flow (mudflow) patterns from a given set of data, describe volcanic hazards associated with various kinds of flows, become aware of the benefits of Earth science information in planning and evacuations and making decisions, show understanding of the nature of science and a controlled experiment.