Teaching systems thinking to general education students

摘要

Under the proposition that all college students are able to learn to think in more systemic ways, and understand the value of systems modeling for assisting their thinking, I designed a course for freshmen with no more than basic algebra. In this course the students were exposed to basic systems concepts with a focus on system dynamics modeling (using Donella Meadows' Thinking in Systems) of a permaculture-based food production system. They were given a basic problem: How much land area would be needed to collect enough solar energy in food plant photosynthesis per year to feed a community of fifty vegetarians? They were told that the farm would be in the Seattle WA, USA area so they could find the average monthly insolation values. Several additional rate constants and conversion factors were provided so they could build a spreadsheet-based model to generate the number of calories needed.