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Cover of Principles of Economics v2.1
July 2014
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ISBN (Digital): 

Principles of Economics

Version 2.1
By Libby Rittenberg and Timothy Tregarthen

Included Supplements


Online Access Price:  $49.95 Color Printed Textbook with Online Access Price:  $84.95
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Principles of Economics, v. 2.1


Libby Rittenberg and Timothy Tregarthen



Updates incorporate the recent recession and recovery— placing it in historical and theoretical context and not shying away from the controversies surrounding how government responded to it.


All time-sensitive data has been updated, along with over half of all the "Start Up" and "Case and Point" applications being brand new or updated.

In writing Principles of Economics, v. 2.1, Libby Rittenberg and Timothy Tregarthen's aims were simple:

      • To provide students with an accessible, straightforward overview of economics
      • To supply faculty with a fully developed teaching package to enable that goal

This textbook is suitable for these courses: Economics

This textbook is suitable for 2 and 4 year institutions.


      • HEADS UP:

Sometimes, students struggle to understand confusing concepts or ideas. Each concept is covered with a ”Heads Up“ to ward off confusion from the very beginning.

      • YOU TRY IT:

Hands-on learning is highly effective. A ”You Try It“ section gives students the reins to walk through economic scenarios themselves, ensuring they also stay on top of important concepts

      • CASE IN POINT:

A ”Case in Point“ section in each chapter uses a real-world application to harness the concept in reality, emphasizing the usefulness of economics.


The Flat World Knowledge publishing model allows instructors to adapt the textbook to the exact needs of their specific class and student body.

See how easy it is to customize a textbook in this 4 minute demo: Flat World Editing Platform Video Demo

Instructor’s Manual

Instructor’s Manual

The Instructor’s Manual guides you through the main concepts of each chapter and important elements such as learning objectives, key terms, and key takeaways. Can include answers to chapter exercises, group activity suggestions, and discussion questions.

Instructor’s Manual

PowerPoint Lecture Notes

PowerPoint Lecture Notes

A PowerPoint presentation highlighting key learning objectives and the main concepts for each chapter are available for you to use in your classroom. You can either cut and paste sections or use the presentation as a whole.

PowerPoint Lecture Notes

Solutions Manual

Solutions Manual

For exercises that need a little more explanation, our Solutions Manual will take you step by step through solving the problem and offer explanations on the answer.

Solutions Manual

Test Item File

Test Item File

Need assistance in supplementing your quizzes and tests? Our test-item files (in Word format) contain many multiple-choice, fill-in-the-blank, and short-answer questions.

At FlatWorld, we take pride in providing a range of high-quality supplements alongside our titles, to help instructors teach effectively. Supplements are available for instructors who have registered their adoption with us. If you need to review or preview something specific, please contact us.

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Libby Rittenberg Colorado College

Libby Rittenberg (PhD Rutgers University) is Professor Emerita of Economics at Colorado College. She also served as the Dean of Summer Programs as well as the college’s ombudsperson. As a professor, she frequently taught Principles of Economics, Intermediate Macroeconomic Theory, Comparative Economic Systems, and a senior seminar on the International Political Economy. Throughout her academic career, Libby was deeply involved in study abroad education and directed programs in central Europe and Turkey. She was honored to have been a Fulbright Lecturer. Her research has focused on the internationally oriented areas of economics, with numerous articles on comparative and development economics, and a particular emphasis on the Turkish economy. 

Timothy Tregarthen University of Colorado Colorado Springs

Timothy Tregarthen (PhD University of California, Davis) is Professor Emeritus of Economics at the University of Colorado-Colorado Springs. There is one word that captures the essence of Tim Tregarthen—inspiring. Tim was first diagnosed with multiple sclerosis in 1975, yet, he continued a remarkable academic career of teaching and research which includes an autobiography recounting his experiences with multiple sclerosis titled Suffering, Faith, and Wildflowers. Tim was formerly on faculty at University of Colorado-Colorado Springs. 

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