From the website: 'This site is for teachers, students, and anyone else who would like a very brief, general introduction to systems thinking and systems modeling. It was written primarily as a teaching resource for college and high school instructors who are short on time, but dedicated to helping students frame and focus their thinking on environmental issues or other complicated, interdisciplinary topics. The site assumes no prior knowledge of systems theory or modeling techniques and covers only the basics, but it includes references to more advanced information for anyone who wants to study this subject in greater depth.'
