Mathematics
-Coming soon
-Algebra, calculus, statistics, and more — structured for self-study and classrooms.
-- High-quality learning materials for elementary school through university — on the web, at no cost. -
-The problem
-- In many countries, families pay hundreds of dollars per child each year for printed textbooks — - on top of tuition, devices, and supplies. When money is tight, students share worn copies, skip - buying books, or fall behind before the term begins. -
-- That cost is not a small inconvenience. It is a barrier to showing up prepared. Open Free Books - exists so every learner can start the year with complete materials, not a receipt. -
-The medium
-- Paper textbooks are fixed: one layout, one edition, no room to fix a typo until the next print run. - Most “digital” versions are the same pages exported to PDF — still static, still hard to search, - still impossible to embed a simulation or a live diagram. -
-- HTML on the open web is different. Chapters can link to sources, resize for any screen, - include interactive figures, and improve over time. The book becomes something you use — not something - you only carry. -
-People & books
-- A great teacher — whether in person or, someday, assisted by thoughtful tools — still sets pace, - asks hard questions, and notices when a student is stuck. That relationship is not what we are - trying to automate. -
-- Textbooks are different. They are reference and structure: explanations, exercises, diagrams. - Those can be free, forkable, and kept current on the web so teachers spend less - time hunting permissions and more time teaching. -
-Agency
-- Finishing a chapter is not the same as understanding it. Skimming for answers, copying worked - solutions, or rushing to the end leaves gaps that show up on the next test — and in the years after. -
-- Read slowly. Try the problems before you peek at hints. Sit with confusion long enough to name what - you do not get. The textbook is a guide; the thinking still has to be yours. That habit - is what school is really training, whether the subject is algebra or history. -
-Planet
-- Core curriculum changes slowly. Newton’s laws, the structure of a cell, and how fractions work do not - need a new AI run every September. Regenerating the same chapter thousands of times burns electricity - in data centers — for text that could have been written once and shared openly. -
-- One carefully reviewed book, published on the web for everyone, means less redundant - compute, less e-waste from disposable PDFs, and fewer trucks moving heavy print runs. Students get - stable material they can trust; the environment gets less waste from doing the same work over and over. -
-Craft
-- A textbook is not a bulk download. It is years of lectures distilled, diagrams redrawn until they - click, exercises tested in real classrooms, and arguments tightened by reviewers who care about - getting it right. -
-- Open Free Books gathers that work from educators and researchers at institutions around the world — - people who have already spent their careers making hard ideas legible. We publish their care - openly so the next student inherits the best version, not a disposable draft. -
-Contributors and partners from leading universities include
-Catalog
-Coming soon
-Algebra, calculus, statistics, and more — structured for self-study and classrooms.
-Coming soon
-Physics, chemistry, biology, and earth science from introductory to advanced levels.
-Coming soon
-History, literature, philosophy, and languages — readable, citable, and free to share.
-Coming soon
-Programming, computer science fundamentals, and practical skills for students and teachers.
-Subject pages and full catalogs are on the roadmap. Contribute a book on GitHub.
-Featured
-Placeholder
-We are building the first open catalog. The first published books will appear in this grid.
-Open source
-Every book is a repository you can fork, translate, or adapt for your classroom.
-Want to list a book? Open a pull request or start a discussion on GitHub.
-People
-- Open Free Books is written and maintained in the open. These are the people building and reviewing the textbooks. -
-- Want to contribute? Open a pull request on GitHub. -
-Acknowledgements
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