Eric I use Wards groundwater model in our Survey of Earth Science groundwater lab. attached is a 'script' of a 20 to 25 minute demo that we do. It is optimized to be done for part of a lab, and to be able to be 'recycled' for the next lab session that may be right after. In other words, this is just a sampling of some of the things that can be done. Good luck. David H. Voorhees Associate Professor of Earth Science and Geology Waubonsee Community College Rt 47 @ Waubonsee Drive Sugar Grove, IL 60554 630.466.2783 [log in to unmask] http://www3.waubonsee.edu/~dvoorhees/ >>> Eric Ruckert <[log in to unmask]> 2/1/2010 6:56 AM >>> I figured I would give all of you a chance to share. I am presenting at the Hoosier Association of Science Teachers this week. The topic is Human Impact on Groundwater. I will be utilizing a groundwater model and showing a presentation on some of the job sites I have worked on as an environmental consultant. If anyone would like to share a lesson I would be happy to pass it on. This is a K-12 conference, however don't let that limit you. As you all know any good teacher can adapt material to fit their classroom. Thanks Eric Ruckert Associate Instructor IPFW WNHS