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Cover of Principles of Economics v2.1
July 2014
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Principles of Economics

Version 2.1
By Libby Rittenberg and Timothy Tregarthen


Online Access Price:  $44.95 Color Printed Textbook with Online Access Price:  $79.95 Access Pass Required: Platinum
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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

Dr. Libby Rittenberg is Professor of Economics at Colorado College since 1989. She has been the Dean of the Summer Session since 2003. She frequently teaches the Principles of Economics, Intermediate Macroeconomic Theory, Comparative Economic Systems, and a senior seminar on the International Political Economy. She received her Bachelor’s Degree from Simmons College and her Ph. D. in Economics from Rutgers University in 1980. Throughout her career, she was very involved in study abroad education and directed programs in central Europe and Turkey. She was a Fulbright Lecturer from 1982-1984. She recently became professor emeritus.

Timothy Tregarthen University of Colorado Colorado Springs

There is one word that captures the essence of Dr. Timothy Tregarthen - inspiring. Tim was first diagnosed with MS in 1975. Yet, he continued a remarkable academic career of teaching and research. In 1996, he published the first edition of his principles of economics textbook to great acclaim, and it became widely used in colleges around the country. That same year, MS made him wheelchair-bound. The disease forced his retirement from teaching at the University of Colorado at Colorado Springs in 1998. He lost the use of his arms in 2001 and has been quadriplegic ever since. In 2002, Tim’s doctor expected him to die. He was placed in the Pikes Peak Hospice program, and was twice given his last rites by his priest. UCCS Chancellor Shockley-Zalabak says that “I really thought that Tim would die in Hospice. That’s what the doctors told me, and I really believed that. I remember one day they called me and told me to try to come see him. They didn't expect him to live through the night.” Not only did he live through the night, but eventually recovered to the point that he moved from hospice to a long term care facility. There, he never let his disease get him down. In fact, he turned back to his love of writing and teaching for inspiration. He obtained a voice-activated computer, recruited a co-author, Libby Rittenberg of Colorado College, and turned his attention to revising his principles of economics book. FlatWorld is honored to publish a new, first edition relaunch of this wonderful book, and proud to bring Tim's incredible talents as a teacher back to life for future generations of students to learn from. In addition to completing the re-write of his textbook, Tim recently completed an autobiography about the 32 years he has had multiple sclerosis, titled Suffering, Faith, and Wildflowers. He is nearing completion of a novel, Cool Luck, based on the life of a friend. It is the story of a young couple facing the husband's diagnosis of ALS — Lou Gehrig's disease. Remarkably, in 2007, he was able to return to the classroom at UCCS, where he taught economics for 27 years. Perhaps Tim’s approach to life is best summed up by an observation by UCCS English professor Thomas Naperierkowski: “One of the remarkable things is, heck, I can wake up with a headache and be a pretty grouchy character, but given his physical trials, which he faces every minute of his life these days, I've never seen him grouchy, I’ve never seen him cranky.” Carry on, Tim.
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