1. Know the Flow: Exploring Ground Water Movement with 3-D Modeling
Laura L. Sanders, Northeastern Illinois University
Introductory Hydrogeology students use a visualization tool to explore how hydrogeologic variables affect ground water flow.
Students construct, calibrate, and run the 3-D flow model, then use it to
Track imaginary particles flowing to wells from the surrounding area to designate a “wellhead protection area”.
Experiment by changing hydraulic properties and conditions to see how the flow system responds.
Using Graphic Groundwater, students
Create a grid directly on the topo map
Students begin with a digital topographic map, then
Gather geologic data
 boring logs  geologic maps
 field work  well surveys
 hydrogeologic literature
Enter hydraulic properties in each grid cell (e.g. well pumping, hydraulic conductivity, recharge)
 Construct cross sections
Lessons Learned and Questions Raised:
This visualization works as a teaching tool because the students control the flow system, and experimental results are immediately visible.
Visualization tools can incorporate interactivity for hands-on inquiry.
? How should we assess the effectiveness of a visualization tool?
? How can we balance the usefulness of a visualization tool with the time and effort required for students to learn to use it?
 Build a conceptual model