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Precalculus (College Algebra + Trigonometry)

3rd Edition

OpenIntro and Carl Stitz

Leanpub revenue supports OpenIntro, which is a US-based nonprofit that provides services to partnering textbooks to help increase adoption of OER textbooks and save students money. These services are fully financed by Leanpub contributions on supported books.

Textbook website: stitz-zeager.com

OpenIntro website: openintro.org

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About

About the Book

Precalculus is free to students while meeting the high-quality bar required of a college textbook. We could have published through a traditional publisher, making shareholders of the publisher some sweet money. Instead, we decided to go the open-source route, because we understand that expensive textbooks are a barrier to education and social mobility.

Extra benefits of using an OER textbook like this one vs the expensive alternatives:

  • Every student can access the textbook, even before the course starts, for free.
  • The 2-part black-and-white paperbacks for this book are available for under $30 on lulu.com. FYI: The book is broken into smaller books because print-on-demand services only allow a book to have 800 or fewer pages. (Paperback distribution via Amazon is also coming soon.)
  • Students have forever access to the textbook PDF, including future editions, for free.

Teachers: register at openintro.org/register to get access to teacher-only content, including the option to get a free desk copy (US-based only).

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About the Authors

OpenIntro

OpenIntro is an educational nonprofit focused on making textbooks that are free, transparent, and lower barriers to education. We also feature supporting resources, such as slides, videos, and more.

Carl Stitz

Carl Stitz is a proud product of Ohio's public education system. He gradated with a BS in Applied Mathematics from The University of Akron in 1995 and a Ph.D. in Mathematics from Kent State University in 2000. He has been teaching college students since 1994 and is committed to offering students high quality, low cost, learning materials. 

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