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Free for students. No access codes, no paywalls, no nonsense.
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Reorder chapters, add your own content, remove what you don't teach.
Companion homework included.
Every textbook comes with a full homework suite on edfinity.com — auto-graded, assignable, and already mapped to the reading.
Gallery of sample sections
Algebra & Trigonometry
Open source alternative to Blitzer — tailored to your course on request
Precalculus
Custom edition of Algebra & Trigonometry — modified for ASU MAT 170
Calculus
Open source alternative to Stewart — sample: Chapter 3 (Derivatives)
Calculus for the Life Sciences
Original textbook — sample: Chapter 4 (Optimization)
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