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Open textbooks
Math
Simple to use, simple to adopt. Our math textbooks are designed to meet the standard scope and sequence requirements of their respective courses â and are 100% free online. Complete with free resources for educators (like LMS integration, lecture slides, instructor answer keys, and more), all OpenStax textbooks are fully customizable. Explore our texts below and adopt any and all parts useful to your course.
Algebra and Trigonometry
Our free algebra and trigonometry textbook can be customized to meet your teaching needs and comes with online educational resources, like LMS course cartridges, PowerPoint slides, and an instructor solutions manual. Try out our resources for yourself below!
[
Algebra and Trigonometry 2e
](https://openstax.org/details/books/algebra-and-trigonometry-2e)
College Algebra
Like our other math textbooks, our college algebra textbooks are free, flexible, and can be viewed online and downloaded as a PDF. Take a look at our free college algebra textbooks and educational resources below.
[
College Algebra 2e
](https://openstax.org/details/books/college-algebra-2e)
[
College Algebra 2e with Corequisite Support
](https://openstax.org/details/books/college-algebra-corequisite-support-2e)
Contemporary Math
Like all OpenStax textbooks, our free contemporary math textbook comes with online educational resources like LMS course cartridges and a solutions manual. The text also integrates into a number of widely used homework systems. Get started below!
[
Contemporary Mathematics
](https://openstax.org/details/books/contemporary-mathematics)
Developmental Math
Our free algebra and prealgebra textbooks are customizable and can be accessed anytime, anywhere. Did we also mention that they come with additional resources for educators and students? Check them out below.
[
Elementary Algebra 2e
](https://openstax.org/details/books/elementary-algebra-2e)
[
Intermediate Algebra 2e
](https://openstax.org/details/books/intermediate-algebra-2e)
[
Prealgebra 2e
](https://openstax.org/details/books/prealgebra-2e)
Precalculus
Like our other OpenStax textbooks, our free precalculus textbook can be viewed online and downloaded as a PDF. Explore our precalculus textbook and educational resources â like LMS course cartridges, PowerPoint slides, and an instructor solutions manual â below.
[
Precalculus 2e
](https://openstax.org/details/books/precalculus-2e)
Principles of Data Science
Our free Principles of Data Science textbook fits one- or two-semester courses across fields like business, healthcare, finance, and more. It blends real and fictional scenarios, in-depth coverage of data ethics and AI, and hands-on Python examples to make data science both accessible and impactful. Direct download links in the text for datasets, code snippets, and rich practice exercises help you apply core concepts in real-world contexts. Explore the text below!
[
Principles of Data Science
](https://openstax.org/details/books/principles-data-science)
Statistics
Our college and high school statistics textbooks are free, customizable, and can be viewed online and downloaded as a PDF. Explore our free statistics textbooks and educational resources below.
[
Introductory Business Statistics 2e
](https://openstax.org/details/books/introductory-business-statistics-2e)
[
Introductory Statistics 2e
](https://openstax.org/details/books/introductory-statistics-2e)
[
Statistics