The second of two Web Seminars on the topic of Watershed
Dynamics was held on Thursday, February 16, 2006, from 6:30 p.m. to 8:00 p.m. Eastern
time. The session was presented by Bill Carlsen and Nancy Trautmann,
co-authors of the NSTA Press publication Watershed Dynamics.
The session started with a general overview of the Web Seminar tools and how they
can be used to facilitate interaction between the participants and the presenter.
Forty-four participants were present in addition to the presenters and the NSTA
staff. Educators represented the states of California, Idaho, Iowa, Kentucky, Louisiana,
Massachusetts, Michigan, Minnesota, Missouri, Montana, Nevada, New Hampshire, New
York, North Carolina, Ohio, Oregon, Pennsylvania, Texas, Virginia, and Washington.
Three participants attended the program from Canada.
Dr. Carlsen began the presentation talking about conceptual, physical, and mathematical
models. He described two problems and explained how models can be used to investigate
potential solutions. The first problem dealt with how land use practices affect
stream flow of watersheds. He used a mathematical model to study the variables in
the system. In his description he introduced STELLA, and showed the participants
how to use it. Using screen shots from STELLA, participants draw their predictions
of stream flow on a watershed after a rainfall.
The second problem used a physical model to help urban students understand the concept
of a watershed, assuming many are not familiar with this concept. Again, Dr. Carlsen
demonstrated how STELLA can be used to represent this physical model using the software.
During the program, Bill Carlsen and Nancy Trautmann answered many questions. While
Bill marked and spoke about the slides, Nancy answered questions in the chat window.
Throughout the presentation there were several opportunities for interactions between
the participants and presenters - answering poll questions, chatting, stamping,
and marking electronic graph paper.
Here are some comments provided by the participants at the end of the Web Seminar:
- "I learned what wetlands do for the environment and why they are protected.
Thank you for your presentation."
- "I was able to extend the information I have learned as an environmental chemist
and discovered a tool to present information to a classroom."
- "I enjoyed participating. I learned quite a bit from the presenters and my peers,
and I was very pleased to be in an environment where I could use a speaker phone
to listen and also communicate on the computer screen simultaneously.""
- "This was a great experience. I enjoyed the content and the resources available
on the web."
Thanks to the participants and Bill for the learning opportunity, the interactions,
and a job well done!
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Underwritten in part by NSTA Press