ECN 104 Course Ref. 9108
Principles of Economics II
Choices and Change
Professor: Dr. Marilyn Pugh
Telephone: 301-322-0477 (Office)
703-569-9478 (Home) please do not call after 10 p.m. or before 9 a.m.
Office – CH108B
e-mail: Please send me an e-mail so I can contact you
Web Page: Check for homework assignments!
Fax: 301-336-2851


The purpose of this course is to give the student an understanding of the decision-making of individuals and firms in the capitalist market place and how to apply these micro economic principles as tools to analyze microeconomic issues.


The student will:

        1.  Know the nature of the economic problem
        2.  Learn how to read and use graphs
        3.  Understand the concept of opportunity cost and its applications
        4.  Understand the forces of supply and demand in a competitive marketplace
        5.  Understand the effects of government intervention in a competitive market
        6.  Know the concept of elasticity and its applications
        7.  Understand the theory of consumer choice
        8.  Understand marginal analysis
        9.  Learn the various production costs
       10. Be able to differentiate between total, average, and marginal
       11. Be able to distinguish between the short run and the long run
       12. Be able to distinguish the four different types of output markets
       13. Understand profit-maximization behavior in each of these types of markets
       14. Be able to use a graph to read and depict the profit-maximizing level of output, the
             profit-maximizing price, total revenue, total cost, and profit or loss
       15. Be able to determine if a firm that is making a loss in the short run should stay in
             business or shut down
       16. Be able to apply microeconomic concepts learned above to factor markets

BROADCAST SCHEDULE:                    Starts

PGCC Cable, Saturdays 12 pm – 1 pm            9/9
                      Mondays 7am – 8 am                 9/11
                      Wednesdays 11pm – 12pm        9/13

Be sure to check out the authors’ website:


A.   Tregarthen, Timothy, and Rittenberg, Libby, Microeconomics, 2nd ed., Worth
       Publishers, 2000.
B.   Wyatt, Ranita, Telecourse Guide for Choices and Change: Microeconomics, Worth
       Publishers, 2000.

Textbook and Telecourse Guide may be purchased at the Largo Campus Bookstore. The bookstore is open Monday through Thursday, 9 am to 8 pm and Fridays, 9 am to 5 pm.


            A.  Read the textbook and telecourse guide materials as assigned before viewing the
                  related TV presentation
            B.  Attend the Orientation session on Friday, September 1
            C.  View 15 TV presentations
            D.  Prepare all telecourse guide lessons for your own use and review each lesson
            E.  Complete homework assignments
            F.  Complete 3 take-home exams and 1 final comprehensive exam


Attend periodically scheduled on-campus sessions during the semester. Sessions will be from 5:30 – 7:30 on the day the take home exams are due and there will be one review session before the final exam. The first three meetings will be in my office and will give you the opportunity to get last minute help from me or from the other students before handing in the tests. The final review session will be scheduled in a classroom to be announced.  Meetings will be October 10, November 1, November 21, and December 7.


The course will have four exams, three take-home and one comprehensive final.

                Exam 1         Chapters 1-4     due Tuesday, October 10
                Exam 2         Chapters 5-8     due Wednesday, November 1
                Exam 3         Chapters 9-11   due Tuesday, November 21
                Final Exam   Chapters 8-14   in Accokeek Hall, December 8-13

The final exam will be taken in the Testing Center in Rm. 201 Accokeek Hall, 2nd floor.

Testing Center Hours:

        Monday thru Thursday: 8:00 a.m. – 8:45 p.m.
        Friday 8:00 a.m. – 3:45 p.m.
        Saturday 8:30 a.m. – 3:45 p.m.


Each of the first three exams will count 100 points; the final will count 150 points. Therefore, there is the possibility of 450 points in the course.

                    A         405-450 points
                    B         360-404
                    C         315-359
                    D         270-314
                    F          below 270


CHAPTER     DATES                  SUBJECT

1                     9/1-9/8                     Economics: The Study of Choice
2                     9/9-9/15                   Confronting Scarcity: Choices in Production
3                     9/16-9/22                 Demand and Supply
4                     9/23-9/29                 Applications of Demand and Supply
TEST             due 10/10

5                     9/30-10/6                 Elasticity: A Measure of Response
6                     10/7-10/13               Markets, Maximizers, and Efficiency
7                     10/14-10/20             The Analysis of Consumer Choice
8                     10/21-10/27             Production and Cost
TEST              due 11/1

9                     10/28-11/3               Competitive Markets for Goods and Services
10                   11/4-11/10               Monopoly
11                   11/11-11/17             The World of Imperfect Competition
TEST              due 11/21

12                   11/18-11/24             Wages and Employment in Perfect Competition
13                   11/25-12/1               Interest Rates and the Markets for Capital and Natural
14                   12/2-12/8                 Imperfectly Competitive Markets for Factors of Production
FINAL            12/8-12/13               Accokeek Hall 201