Breadcrumb Home Economics ES 223/ECON 22003 ES 223/ECON 22003: Principles of Microeconomics Download as PDF Common Course Number ECON 22003 Program Economics Lecture Hours 3 Credits 3 ACTS Equivalent Course Number ECON 2203 A continuation of ES 213/ECON 21003 (ECON 2103), including the behavior of decision makers in the economy, taxation, income distribution, and current economic problems. Prerequisites ES 213/ECON 21003 (ECON 2103) or departmental approval.