Openintro.org
OpenIntro: developer and promoter of educational products that are free, transparent, and lower barriers to education.
OpenIntro offers free, high-quality textbooks and resources to make learning math and statistics accessible for students and teachers everywhere.
Access free math and stats textbooks online
OpenIntro is all about making education more accessible by providing free, transparent, and high-quality textbooks for math and statistics. If you’re a student or teacher looking for affordable resources, you’ll find a range of open-source textbooks covering statistics, calculus, algebra, and more—all available online at no cost.
This nonprofit platform is designed to help you learn or teach without the worry of expensive textbooks. Whether you’re in high school, college, or just curious about math, you can browse and download textbooks, join community forums, and find helpful teaching options. By lowering the barriers to education, OpenIntro empowers you to focus on learning and sharing knowledge without financial stress.
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